ln log 1/x RND y√x 10^x ± Ans MC M- M+ sin cos tan DEG % sin-1 cos-1 tan-1 ^ √ 3√ x² x π e x³ ÷ 7 8 9 - 4 5 6 + 1 2 3 = 0 . AC ⌫ n! ( )