Plottron1.9.0 - App Store
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Publisher Description
A graphing + scientific calculator.
. 2D and 3D graphing
Graphs regular functions, parametric relations, and functions in polar/spherical coordinates.
. Implicit graphing
. Visualization of complex maps w=f(z) featuring domain coloring plots
. For 2D functions: Info mode with tangent line and 2nd-order Taylor approximation
Scientific calculator features:
. User-defined variables and functions
. Symbolic derivative (e.g.: D(x, sin(x))
. nCr, nPr, factorial
. Complex numbers
. Live evaluation (calculate as you type)
. Calculation history
. Probability density functions: Binomial, Normal (Gaussian), Student’s t
. Cumulative probability density functions
. Inverse CDF functions: Normal (Gaussian), Student’s t
Examples:
Implicit graph: cos(X)=sin(Y)
Graph a parabola in Regular mode: X^2
Graph a circle in Parametric mode: cos(T);sin(T)
Set a variable: X=5
Use a variable: X+4: 9
Define a function: f(X)=X+1
Use a defined function: f(2): 3
Symbolic derivative: D(X,sin(X)): cos(X)
Complex magnitude plot in 3D Regular mode: abs(1/cos(X+Yi))
Notes:
. Swipe left for settings.
. Use semicolon (;) to separate functions in parametric relations.
. Swipe down on keypad to show full history. Tap on answer to show keypad again.
Version History UI fixes and refinements 1.9.0 Sep 19 -Added Student’s t distribution PDF/CDF/inverse CDF (tpdf/tcdf/invt functions)
-Added inverse normal CDF function (invnorm) 1.8.9 Sep 10 -New factorial (gamma) function that supports negative numbers (non-integers)
-Issue fixes 1.8.8 Mar 27 Faster Binomial probability density function
Fixed Binomial PDF function domain 1.8.7 05/18/2025 Issue fixes 1.8.6 05/08/2025 Added new functions:
- gcd, lcm (greatest common divisor, least common multiple)
- binpdf, normpdf (binomial/Normal probability density functions) 1.8.5 05/07/2025 Issue fixes 1.7.9 12/16/2024 Fixed implied multiplication precedence issue 1.7.8 07/09/2023 Fixed implied multiplication precedence issue 1.7.7 07/08/2023 Fixed issue with complex identities 1.7.6 07/04/2023 Fixed issue with saving large fractions/complex numbers 1.7.5 07/01/2023 - Dark Mode support
- Fix issues with speech
- Added localization 1.7.4 10/11/2022 Support landscape orientation on iPad 1.7.3 08/02/2021 - Added graph cursor
- Fixed incorrect derivatives 1.7.2 06/03/2021 Fixed issues with parametric/polar plotting 1.7.1 01/13/2020 Faster implicit graphing 1.7.0 12/17/2019 Issue fixes for iOS 13, calculation engine issue fixes, and UI enhancements 1.6.3 10/21/2019 - Added home screen quick actions for copying variables
- Improved implicit plot rendering 1.6.2 11/11/2018 - Fixed issue with crashes with Speak feature 1.6.1 10/27/2018 - iPhone X support
- angle function for complex numbers
- Issue fixes 1.6.0 02/22/2018 Faster implicit plotting with trigonometric functions 1.5.1 06/26/2017 New feature: implicit graphing
Graph solutions of 2D equations. For example: sin(X-Y)=cos(XY) 1.5.0 02/22/2017 - Minor UI improvements 1.2.4 11/01/2016 - Issue fixes
- Larger range of colors for complex domain coloring graphs 1.2.3 07/28/2016 Minor improvements 1.2.2 07/19/2016
