MC MR M+ M- C ← sin cos tan ln log x^y asin acos atan √ ∛ x² sinh cosh tanh e^x n! |x| π e φ DEG RAD mod 7 8 9 ÷ ⌊x⌋ ⌈x⌉ 4 5 6 × ( ) 1 2 3 − ANS ⌊x⌉ 0 . ± + =