# Updates to Infinite Algebra 2

Download the latest version### Included in version 2.70.06 released 1/5/2023:

- Fixed: Choices could appear incorrectly

### Included in version 2.70.05 released 12/21/2022:

- Fixed: Continuous Exponential Growth and Decay Word Problems - Could generate an incorrect answer

### Included in version 2.70 released 7/8/2022:

- New: Add preferences for Metric/Imperial units
- New: Add preference to “Prefer x“ as the variable letter
- New topic: Discrete Relations
- New topic: Continuous Relations
- New topic: Evaluating and Graphing Functions
- New topic: Direct and Inverse Variation
- New topic: Continuous Exponential Growth and Decay
- Improved: UI, security, and stability with updated libraries
- Fixed: Properties of Exponents – Choices could be equivalent
- Fixed: Properties of Logarithms – Choices could be equivalent
- Fixed: Solving Exponential Equations With Logarithms – Choices could be equivalent
- Fixed: Geometric Series – Choices could be equivalent

### Included in version 2.62 released 2/8/2022:

- New: Print questions from Presentation View
- New Topic: Discrete Exponential Growth and Decay Word Problems
- Improved: UI, security, and stability with updated framework and libraries
- Improved: [Mac] Dark mode
- Fixed: [Windows] - Detached topic list does not close when application is closed
- Fixed: Probability Mutually Exclusive Word Problems - mutually exclusive case given when inappropriate

### Included in version 2.61.03 released 9/10/2021:

- Improved: Minor UI improvements
- Fixed: Law of Cosines - Crash when opening topic
- Fixed: [Windows] Unable to change page layout to landscape
- Fixed: [Windows] Error 'Unable to load platform plugin'

### Included in version 2.61 released 8/27/2021:

- Fixed: Preferences page for Kuta Works
- Improved: Security and stability with updated networking libraries

### Included in version 2.60 released 8/19/2021:

- Improved: UI, security, and stability with updated framework and libraries
- Improved: Site licenses check expiration date more frequently
- Fixed: Combinatoric Word Problems - Values could overflow
- Fixed: Properties of Exponents - Answer might not be fully simplified
- Fixed: Properties of Logs - Possible to have duplicate choices
- Fixed: Radical Equations - Option to mix radicals and rational exponents had no effect

### Included in version 2.52 released 6/14/2019:

- New: Scramble questions by directions
- New: Scramble all questions in assignment
- New: Consolidate question sets with identical options
- New: Regroup question sets by directions
- New: Kuta Works - Create a two semester course
- New: Kuta Works - Clone assignments from a previous course into a new one
- Fixed: Presentation View - Arrow keys could change zoom at start/end of assignment
- Fixed: Tight Layout - Directions could be cramped for no reason
- Fixed: Inverse Trig - Angles limited for tan(
*x*) - Fixed: Inverse Trig - Errors in UI logic

### Included in version 2.50 released 4/12/2019:

- New: Kuta Works - Option to hide answers and results from students until after due date
- New: Kuta Works - Option to control how long choices are hidden
- Improved: Options windows appear at a better initial size
- Improved: Window controls shown at their native size and spacing
- Improved: Network proxy configuration window
- Improved: License activation process
- Fixed: Presentation View - Answers could be cut off
- Fixed: Some window controls cut off on Windows 10 with display scaling
- Fixed: Spelling errors
- Fixed: Kuta Works - Course list could display more than just your active courses
- Fixed: Graphing Rational Functions - Open holes in graph could appear as filled holes

### Included in version 2.42 released 12/11/2018:

- Fixed: Certain symbols incorrect if saved on Mac and loaded on Windows or vice versa
- Fixed: General Sequences - Recursive formula sometimes wrong
- Fixed: Properties of Logarithms - Avoid questions with reducible roots

### Included in version 2.41 released 9/26/2018:

- Fixed: Archived courses in Kuta Works are now hidden
- Fixed: Generating or regenerating questions could cause a crash

### Included in version 2.40 released 8/8/2018:

- New: Integrated with Kuta Works. Now post assignments online.

### Included in version 2.25 released 4/27/2018:

- Improved: Generate questions more quickly
- Improved: Measurement arrows reach correct endpoints
- Improved: Absolute Value Equations - Better decimal numbers
- Improved: Absolute Value Inequalities - Better decimal numbers
- Improved: Compound Inequalities - Better decimal numbers
- Improved: Multi-Step Equations - Better decimal numbers and more predictable special cases
- Improved: Multi-Step Inequalities - Better decimal numbers
- Improved: Order of Operations - Better decimal numbers
- Fixed: Trig units for piecewise functions and ordered pairs
- Fixed: Graphing Rational Functions - Prevent equivalent choices
- Fixed: Law of Sines - Program could freeze
- Fixed: Transformations - Prevent equivalent choices

### Included in version 2.18 released 7/31/2017:

- Fixed: Open circles on graphs were filled in when displayed as answer in red
- Fixed: Typo in sample custom question
- Fixed: Transformations - Program could freeze
- Fixed: Systems of Quadratic Equations - Program could freeze

### Included in version 2.17 released 4/27/2017:

- Improved: [Windows] "Export to clipboard as bitmap" renders image with better quality
- Fixed: Probability with Combinations and Permutations - Could ask about impossible lottery ball

### Included in version 2.16.20 released 11/16/2016:

- Fixed: Solving Quadratic Equations by Taking Square Roots - Option to "Allow fractions" not working as expected

### Included in version 2.16 released 9/16/2016:

- Fixed: Numbers with many significant digits could round incorrectly
- Fixed: Customized question containing an error could not be modified
- Fixed: Customized question containing an error could cause a crash
- Fixed: Feedback tool detects Windows 10 properly
- Fixed: Mouse cursor when drag-dropping a question
- Fixed: Keyboard shortcut for changing order of question sets in assignment

### Included in version 2.15 released 7/14/2016:

- Improved: Reorder question sets by dragging and dropping
- Improved: Move individual questions within a set by dragging and dropping
- Improved: Presentation View - Commands now on a movable, dockable toolbar
- Improved: Added option for large toolbar icons
- Improved: New icons
- Fixed: Certain options could result in double parenthesis or parenthesis around a negative sign
- Fixed: Arrow over vector variable name not red when appropriate
- Fixed: Solving Systems of Equations by Graphing - Answer could be displayed twice
- Fixed: Equations of Parabolas - Certain givens indicate wrong sign

### Included in version 2.11 released 5/13/2016:

- Improved: [Windows] "Export to clipboard as bitmap" pastes into Microsoft Word at appropriate DPI
- Fixed: Keyboard shortcut for adding space to question set

### Included in version 2.10 released 5/11/2016:

- New: Preference for including "None of the above" as a choice
- New: One column layout
- New: Added support for Infinite Precalculus
- New: Easily add piecewise functions of graphs in custom questions: Example: piecewise([2x-3] if [x<5], [x-1] if [x >= 5])
- New: Easily add functions with restricted domains to graphs in custom questions Example: function(x/2, x<0)
- Improved: More efficient layout of choices
- Improved: [Mac] Added option for legal paper in page setup
- Fixed: Spelling and grammatical errors
- Fixed: Graphing Quadratic Functions - Prevent equivalent choices
- Fixed: Binomial Theorem - Certain options didn't allow for many questions
- Fixed: Right Triangle Trig - Couldn't select just one ratio except sine
- Fixed: Right Triangle Trig - Answer sometimes given in problem
- Fixed: Law of Cosines - Certain SAS cases could freeze program
**Note: Older versions will not be able to open assignments saved with this version**

### Included in version 2.06 released 8/3/2015:

- Fixed: Crash when saving if previously used folder no longer exists

### Included in version 2.05 released 7/20/2015:

- New Topic: Sample Spaces and The Fundamental Counting Principle
- New Topic: Independent and Dependent Events
- New Topic: Independent and Dependent Events Word Problems
- New Topic: Mutually Exclusive Events
- New Topic: Mutually Exclusive Events Word Problems
- Fixed: Classifying Conics - Checkboxes for conic types had no effect
- Fixed: Presentation View - Displayed wrong directions in 3-up mode
- Fixed: Presentation View - Lines too long after creating new problems
- Fixed: [Windows] Uncommon error when using the network

### Included in version 2.04.40 released 3/31/2015:

- Fixed: Activation data unrecognized under special circumstances
- Fixed: [Windows] Help files broken by previous release
- Fixed: Order of Operations - Radio buttons reversed

### Included in version 2.04.20 released 3/23/2015:

- Improved: [Windows] "Export to clipboard as bitmap" uses a transparent background

### Included in version 2.04 released 3/17/2015:

- New Topic: Permutations
- New Topic: Combinations
- New Topic: Permutations vs Combinations
- New Topic: Probability with Permutations and Combinations
- New Topic: Converting Degrees and Degrees-Minutes-Seconds
- New: Added functions to custom questions:
- [factorial(n)]
- [perm(n, r)]
- [comb(n, r)]

- Improved: Better support for proxies
- Improved: Support for HiDPI Mac Retina displays
- Improved: Print options window - Some settings are now persistent
- Improved: Presentation View - Use arrow keys to navigate between questions
- Improved: Question set updates free response/multiple-choice when all questions have changed
- Improved: [Mac] Activation also checks /Library/Preferences/ks-config.txt for serial numbers
- Fixed: [Windows] Crash when printing with certain printers
- Fixed: Crash when loading an assignment with over 80 custom questions
- Fixed: Custom question answer was never choice A
- Fixed: Paper size set before printing
- Fixed: Cramer's Rule - Fixed directions
- Fixed: Systems of Three Equations - Restored the option to "only solve for x"
- Fixed: Center of circle wasn't appearing

### Included in version 2.03 released 9/19/2014:

- Fixed: Preference for question layout mode not correctly loaded
- Fixed: Issues with automatic spacing and highlighting questions when using tight layout
- Fixed: In Presentation View, graphing problems display choices more compactly
- Fixed: Printing blank pages on HP LaserJet 1018, 1020, and 1022 among others
- Fixed: Logs and Exponents as Inverses - problem with slider

### Included in version 2.02 released 8/5/2014:

- New: Software uses system proxy when necessary
- Improved: Activation window has taskbar entry
- Improved: Remembers the last directory used when saving and opening files
- Fixed: [Windows only] Possible crash when loading an assignment with a lot of custom questions
- Fixed: [Mac only] Application stops responding to hover events
- Fixed: Activation from before v2.0 sometimes not recognized
- Fixed: Export to clipboard sometimes cuts off choices B and D
- Fixed: Help contents could become unusable
- Fixed: Word wrap when modifying a question
- Fixed: Memory leak

### Included in version 2.01 released 7/28/2014:

- Fixed: Could crash when opening an assignment from a different program

### Included in version 2.00 released 7/23/2014:

- New: Print to PDF
- New: Filter for topic list
- New: Zoom while viewing on screen
- New: "More like these" button in presentation mode
- New: Show where punch holes will go on the page
- New: Print only an answer sheet
- New: When printing, page range is enabled
- New: Page elements are outlined when hovered
- New: Double-click on directions to change them
- New: When merging assignments, options to put similar topics together or put them end-to-end
- New: Highlight and go to the questions in a question set (menu command or shift-click)
- New: Site licenses can be activated per-machine if run by the administrator
- New: Select multiple questions at a time:
- Ctrl-Click on a question
- Shift-Click on a question
- Ctrl-Shift-Click on a question
- Shift-Click in a empty area of a page
- Ctrl-Shift-Click in a empty area of a page
- Shift-Click on a question set
- Ctrl-Shift-Click on a question set

- Improved: Assignment files are drastically smaller
- Improved: Sidebar is dockable on either side, can be floated, and position reset
- Improved: Auto-spacing doesn't leave dead space at bottom of each page
- Improved: Preview when editing directions
- Improved: Keyboard shortcuts work no matter where the focus is
- Improved: Scale number of questions window more user-friendly
- Fixed: Minor bugs in seven topics
**Note: Older versions will not be able to open assignments saved with this version**

### Included in version 1.56 released 8/14/2013:

- Fixed: Graphing Exponential Functions - Correct choice used lighter shade of blue
- Fixed: Radical Equations could be missing a solution
- Fixed: Graphs of Polynomial Functions - Inflection points sometimes listed as local extrema
- Fixed: Properties of Exponents - Occasionally answer wasn't fully simplified
- Fixed: Dividing Polynomials - Occasionally polynomial was evenly divisible when it shouldn't have been
- Fixed: Graphing Rational Functions - Minor UI issue
- Fixed: Geometric Sequences - Given information sometimes allowed for two possible common ratios
- Fixed: Dividing Polynomials could freeze
- Fixed: Systems of Equations by Elimination - "No solution" occasionally should have been "Infinite solutions"

### Included in version 1.55 released 12/11/2012:

- New: Graphs can be added to custom questions
- Improved: Graphing and Graph Paper utility more powerful and easier to use
- Improved: Support for loading files from Infinite Calculus
- Improved: Faster save/load
- Fixed: Answer for Factoring Quadratic Expressions sometimes incorrect
- Fixed: Choices for Evaluating Functions with a variable operand could contain wrong variable
- Fixed: Choices for Function Operations with a variable operand could contain wrong variable
- Fixed: Function Operations, functions when composed with self could provide the wrong answer
- Fixed: Custom questions with an illegal expression could freeze the program
- Fixed: Certain families of functions graphed incorrectly
**Note: Older versions will not be able to open assignments saved with this version**

### Included in version 1.53 released 9/11/2012:

- New: Preference for notation for greatest integer function
- New: Added maximize/restore button to Presentation View
- New: Graphing Absolute Value Equations has options for including coefficients
- Improved: Help files
- Improved: Scroll bars
- Improved: User interface
- Improved: When choices make a question too tall for a page, some choices are removed
- Improved: Algebraic simplification routines are now more efficient
- Improved: Better graphs for: Graphing Absolute Value Equations, Graphing Linear Equations, Graphing Exponential Functions, Graphing Quadratic Functions, Graphing Linear Inequalities, Graphing Systems of Linear Inequalities
- Improved: Better number lines for: Multi-Step Inequalities, Compound Inequalities, Absolute Value Inequalities
- Fixed: Wrapping to full-page and half-page could be too wide
- Fixed: Able to graph certain families of functions
- Fixed: Issue involving loading & regenerating an assignment and answers being hidden
- Fixed: Program could ask about changing directions too much
- Fixed: Graphs for Compound Inequalities could omit interval
- Fixed: Double & Half Angle Identities: Button to show more examples did not work
- Fixed: Writing Linear Equations: Answer can't be line given in question

### Included in version 1.52 released 5/29/2012:

- Improved: More professional radical signs
- Improved: Graphs of discontinuous functions have breaks and open / closed holes
- Improved: Even less likely to crash when generating questions
- Fixed: Word wrapping could skip blank lines, not wrap where appropriate
- Fixed: Wrapping to full page in a custom question was too wide
- Fixed: Products of powers of
*e*(like 2*e*³) no longer display with a multiplication dot - Fixed: Most diagrams appeared incorrectly in print preview
- Fixed: Random error message on save or load
- Fixed: Graphing Rational Functions: Open holes in graph could appear as filled holes

### Included in version 1.51.02 released on 4/9/2012:

- Fixed: Minimum Windows version was set incorrectly

### Included in version 1.51 released 4/5/2012:

- New: Added greatest integer function / floor function to custom questions Example: Find [int(2x)] when [x=3/5]
- New: Added piecewise functions to custom questions Example: [eval(f,x)] = [piecewise [x] if [x < 0], [xx] if [x >= 0]]
- Improved: Faster! Optimized rendering of questions to screen
- Improved: Faster! Optimized graphing routines
- Improved: Improved graphing capabilities
- Improved: Diagrams drawn more smoothly on screen
- Fixed: Rewriting Logarithms - Numeric problems sometimes had bad values
- Fixed: Evaluating Logarithms - Problems sometimes had bad values
- Fixed: Graphs could omit holes
- Fixed: Graphs of constant functions or those involving
*e*and π could be incorrect - Fixed: Minor indentation issue in custom questions
- Fixed: Horizontal asymptotes could be drawn beyond a graph's area
**Note: Older versions will not be able to open assignments saved with this version**

### Included in version 1.50 released 3/15/2012:

- New: Presentation View window is resizeable
- New: Presentation View has option to automatically hide the answers when a new question is displayed
- New: High-level filter to prevent questions from containing an illegal expression
- Improved: Function notation can now be edited
- Improved: Faster! Optimized the simplification of mathematical expressions
- Improved: Faster! Improved undo/redo algorithm
- Improved: Smaller executable size
- Improved: "Current Question Sets" list easier to use
- Improved: Options windows resize more smoothly
- Fixed: Equation of Parabolas could freeze
- Fixed: Geometric Series questions could list "Illegal Expression" as a choice
- Fixed: Graphing Exponential Functions could freeze
- Fixed: Systems of Equations Word Problems could freeze
- Fixed: Punctuation in some word problems
- Fixed: Certain expressions in a custom question would cause the software to crash
- Fixed: Expressions like
*root*×*term*would not print a multiplication dot **Note: Beginning with this version, Windows XP SP3 is the minimum required version of Windows****Note: Older versions will not be able to open assignments saved with this version**

### Included in version 1.45 released 4/12/2011:

- New: Assignments from this program can be opened and modified by our other programs (Assignments saved with v1.45 or greater can be opened by other programs v1.45 or greater)
- New: Student data fields (name, date, period) can be renamed
- New: Additional student data field available
- New: Add & Continue is available when modifying an existing question set
- New: Link to this details page when a software update is available
- New: Product serial numbers can be placed in config.txt to facilitate enterprise installations
- Improved: Better backwards- and future-compatibility
- Fixed: Assignments with quotes in the title don't prevent Save As
- Fixed: Quotients could be sometimes be simplified incorrectly
- Fixed: Writing Linear Equations: Answer can't be line given in question
- Fixed: Choices for dilations sometimes inappropriate
- Fixed: Dilations rounding x- and y-coordinates
- Fixed: Function Operations could have "Illegal Expression" as an answer or as a choice
- Fixed: Multi-Step Equations: Program could freeze
- Fixed: Dividing Radical Expressions: Program could freeze
- Fixed: Add & Continue respects change in problem type
- Fixed: Powers of
*i*are correctly displayed

### Included in version 1.42 released on 6/28/2010:

- New: Automatically checks for updates
- New: List topics by index order or suggested order

### Included in version 1.40 released 2/8/2010:

- New Preference: 'Spacious' or 'tight' layout of questions on page
- Improved: Question sets with one question are more intelligently spaced
- Improved: Graphs with small ranges now look better
- Improved: Options screen now resizeable
- Fixed: Directions occasionally orphaned at bottom of page
- Fixed: Correct numbers changed because zeros at the end of a number were deleted (50 --> 5)

### Included in version 1.08.20 released 5/22/2009:

- Changed: Minor change to license agreement so that renewals extend the termination date instead of beginning a new term.

### Included in version 1.08 released 4/10/2009:

- New: Possible to change directions for a set without regenerating questions
- Improved: Help files
- Improved: Changing directions cascades changes to appropriate neighbors
- Correction: Answers to Properties of Exponents could have wrong sign
- Correction: Inequalities were sometimes solved incorrectly
- Fixed: Software sometimes failed to renumber questions in assignment

### Included in version 1.07 released 1/6/2009:

- New: Trig. equations that don't require factoring
- Correction: Function operations / linear combinations answers sometimes wrong
- Fixed: Software crashes when starting if closed when side panel is minimized

### Included in version 1.06 released 12/4/2008:

- Improved: Isolate up to four questions on screen at once
- Improved: Support for computers with multiple processors
- Improved: User interface: Toolbar + Preferences
- Fixed: Obscure error involving selecting a question and scaling the assignment

### Included in version 1.03 released 10/1/2008:

- New: Export individual questions as bitmaps
- Improved: Custom questions wrap to whole/half page
- Improved: Insert special symbols and math in custom questions
- Improved: Insert 'blanks' into math text
- Improved: Line thickness preference also now controls darkness of grid lines in graphs
- Correction: Writing logs in terms of others sometimes created duplicate questions
- Fixed: Internet calls would sometimes report wrong error

### Included in version 1.02 released 9/18/2008:

- Correction: Question type was not saving all of its options
- Correction: Equations of Hyperbolas description was sometimes wrong
- Correction: Geometric Series directions was sometimes wrong
- Correction: Binomial Theorem type could cause the program to freeze
- Correction: Quadratic/Linear systems sometimes had the wrong answer
- Correction: Rational Exponents answers now correct
- Fixed: Internet calls could freeze program