DEG MC MR M+ M− sin cos tan log ln sin⁻¹ cos⁻¹ tan⁻¹ √ ∛ ( ) xʸ |x| n! AC ⌫ π e ÷ 7 8 9 1/x × 4 5 6 x² − 1 2 3 x³ + 0 . ± % =