MS MR MC M+ M- |x| sin cos tan sin⁻¹ cos⁻¹ tan⁻¹ √ ∛ x^y log ln π C ⌫ ( ) e n! 7 8 9 / 1/x % 4 5 6 × x² x³ 1 2 3 - 10^x exp 0 . = + ± RND