500 - 1,000 downloadsAdd this app to your listsTweets por @Appszoom
You can also learn differentiation on Web, for example,
This free program can be solved only by the following technique.
y=ax^3 + bx^2 + cx + d
y'= 3ax^2 + 2bx + c
After starting this app, the screen changes every three second to draw alternative question. Once touch the screen, the question begins.