Graphing calculator plus 84 83

The full-feature scientific graphing calculator 84 plus provides many useful features for students:
- Graphing calculator 83 plus supports graphing, draw graph of many functions such as parametric, polar and functions
- Scientific graphing calculator 84 plus working as well as calculator t1 83 by supporting equation solver, newton root finding, fraction calculation.
- Graphncalc calculator 89 plus include integral calculator, symbolic derivative
- Statistics and regression: one variable statistics and two variables statistic, linear regression, quadratic, quartic, ...

This graphing calculator 84 plus emulates as an emulator 84 plus, students can use as an instruments tools for homework.
The robust equation solver can solve all of equations such as 83 x ^ 4 - 84 x ^ 3 + 89 x = 83
Finally, grafischer taschenrechner 84 includes full function documentation and examples.

Recent changes:
Bug fixes and performance improvements.