Desmos Scientific Calculator
Move beyond arithmetic with the Desmos scientific calculator! In addition to the basic operations, take advantage of a variety of built-in functions for exploring trigonometry, statistics, combinatorics, and more. Or, define and evaluate your own functions -- all for free.
At Desmos, we imagine a world of universal math literacy where math is accessible and enjoyable for all students. To that end, we’ve built a simple yet powerful scientific calculator that runs on the same blazingly fast math engine as our next-generation graphing calculator, but with a more streamlined set of features, for those times when you just don’t need a graph. It’s intuitive, beautiful, and completely free.
Features:
Arithmetic: In addition to the basic operations, the scientific calculator also supports exponentiation, radicals, absolute value, logarithms, rounding, and percentages.
Trigonometry: Evaluate the fundamental trigonometric functions and their inverses, using either radians or degrees for angle measure.
Statistics: Compute the mean and standard deviation (sample or population) of a list of data.
Combinatorics: Count combinations and permutations and calculate factorials.
Other features:
- Works offline, no internet connection required.
- Create and evaluate your own functions using familiar function notation.
- Assign values to variables for later use.
- View multiple expressions at once. Unlike many scientific calculators, all of your previous work remains visible on the screen.
- The “ans” key always holds the value of your last computation so that you never have to remember or copy a result. If you change an earlier expression, the “ans” value updates automatically.
- Did we mention it’s free?
除了算數以外，Desmos 科學計算機還提供了許多強大的功能！不但可以做基本的運算，你還可以善加利用各種內建的功能來探索三角函數、統計、離散數學及更多。或定義和計算你自己的函數——完全免費。
Desmos的夢想是提升全民數學素養，我們期許所有學生都能接觸到數學，並在學習中享受數學帶來的樂趣。為此，我們打造了一款簡單卻強大的科學計算機，運行和我們次世代繪圖計算機中一樣強大且快速的數學引擎，但功能更加精簡，適合在無需繪圖時使用。它讓數學變得既直覺又美觀，而且完全免費。
功能：
算術：除了基本的運算，科學計算機還支援指數、根數、絕對值、對數、四捨五入及百分比。
三角函數：可以使用弧度或度數作角度測量，計算基礎的三角函數及其反函數。
統計：計算數據的平均值和標準差（樣本或是總體）。
離散數學：計算排列組合以及階乘。
其他特色：
- 離線運作，無需網路連線。
- 使用你熟悉的函數符號來創造和計算自訂的函數。
- 為變數賦予數值以便後續使用。
- 同時檢視多個方程式。與眾多科學計算機不同，你之前所有的工作仍保留在螢幕上。
- 「ans」鍵保留了上次計算中的數值，如此一來，你就不用記住或複製計算結果。如果你更改先前的運算式，「ans」按鈕的數值會自動更新。
- 我們有提到它是免費的嗎？
前往 www.desmos.com 了解更多，或造訪 www.desmos.com/scientific 查看我們科學計算機的免費線上版本。