無料 · 教育・科学
関数電卓.
オンライン関数電卓：度・ラジアンの三角関数、対数、累乗、根号、階乗、nCr、メモリーと履歴に対応。
Type with the keyboard or the keys. Supports implicit multiplication (2π, 3(4+1)), powers (2^10), factorial (5!), percent (20%), nCr(10,3), log(x, base), root(x, n) and mod(a, b). Enter calculates, Esc clears.
使い方: 関数電卓
データを入力するかファイルを選び、設定を調整して結果を生成します。コピーやダウンロードの前に結果を確認してください。
制限と対応形式
入力内容はお使いの端末で処理されます。
英語の技術説明
Double-precision arithmetic shown to 15 significant digits. Factorials of whole numbers up to 170. No complex numbers, units or graphing. History is kept only in this browser. Everything is calculated in your browser; nothing you type is uploaded.
Expressions are parsed by a small recursive-descent parser (no eval): powers are right-associative, −2^2 is −4, implicit multiplication such as 2π and 3(4+1) works, and % divides by 100. Trigonometric results within 1e-14 of zero are shown as exactly zero.
In degree mode, 2sin(30) + 5! gives 121, and 0.1 + 0.2 shows 0.3 instead of floating-point noise.