MC MR M+ M- MS sin cos tan log ln sin⁻¹ cos⁻¹ tan⁻¹ √ ∛ π e |x| xʸ n! C CE ⌫ ÷ ± 7 8 9 × x² 4 5 6 − x³ 1 2 3 + 1/x 0 00 . =