好贵呀！孩子真的用不起
还是看看以前免费的时代吧
Great
Everything I needed for math problems keep up improving!
Impressive
This is a great app for complex and algebraic calculations.
2 suggestions:
1. Allow the user to input negative values for the graphing range.
2. Is there a way to clear the history?
Great app!
Eddie
2 suggestions:
1. Allow the user to input negative values for the graphing range.
2. Is there a way to clear the history?
Great app!
Eddie
