What's New
What’s news in version 4.3:
* Minor bugs fixed.
* Support iOS 13 and up.
App Description
This app is an interactive graphing math book in which high school, college students and science lovers can observe and try out various ways of analyzing a quadratic function with graphing features.
Students are gradually introduced the theory behind a quadratic function with various parameters. Mathematically, a quadratic function may be expressed in one of the three forms: the vertex form, the general form, and the factored form. This app shows techniques to find the zeros, the coordinates of the vertex, the y-intercept; to draw the corresponding parabola and its axis of symmetry; as well as to algebraically convert from one form to another.
There are formula-specific calculators (CalPad) and parabola plotter (PlotPad) that help students characterize a quadratic function using domain, range, and variations; and visualizing the relative size and shape of the transformed parabola compared to the basic one.
• The vertex form: f(x) = a(x - h)² + k
• The general form: f(x) = ax² + bx + c
• The factored form: f(x) = a(x - x₁)(x - x₂)
iPhone Screenshots
(click to enlarge)
iPad Screenshots
(click to enlarge)
App Changes
- December 20, 2015 Initial release
- January 16, 2016 Price decrease: $3.99 -> $0.99
- January 21, 2016 New version 2.0
- February 20, 2016 Price increase: $0.99 -> $8.99
- March 07, 2016 Price decrease: $8.99 -> $0.99
- March 08, 2016 Price increase: $0.99 -> $3.99
- March 21, 2016 Price increase: $3.99 -> $8.99
- March 21, 2016 Price decrease: $8.99 -> $3.99
- June 30, 2016 New version 3.2
- November 08, 2016 New version 3.3
- June 15, 2019 New version 3.6
- June 15, 2019 Price decrease: $3.99 -> $0.99
- June 16, 2019 Price decrease: $3.99 -> $0.99
- July 15, 2020 New version 3.7
- September 16, 2023 New version 4.3
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