CASIO CLASSWIZ fx-991EX

[lrdheat]

Much longer equations can be entered in textbook mode than the TI 36X Pro! I just entered integral of 1/tan(2x)sin(2x) from pi/6 to pi/4 -10^-12 + integral 1/tan(2x)sin(2x) from pi/4 +10^-12 to pi/3 which srolled way off initial display screen, and it quickly came up with the decimal approximation which I verified accurate to all digits displayed. If I integrated from pi/6 to pi/4, it balks due to undefined point at pi/4. By the way, Prime does fine with pi/6 to pi/3 in home, but hangs with this problem in CAS.