{"repo":"PaddiM8/kalker","free":true,"listed":false,"github":"https://github.com/PaddiM8/kalker","clone":"git clone https://github.com/PaddiM8/kalker.git","description":"Scientific calculator with math syntax that supports user-defined variables and functions, complex numbers, and estimation of derivatives and integrals","language":"Rust","stars":1908,"topics":["calculator","rust-crate","math","rust"],"license":"MIT","category":"mobile-apps","readme_excerpt":"Kalker is a calculator program/website that supports user-defined variables, functions, differentiation, and integration. It runs on Windows, macOS, Linux, Android, and in web browsers (with WebAssembly). Website - Try it out here! Features Operators: + , - , , / , ! Groups: () , [] , ⌈ceil⌉ , ⌊floor⌋ Vectors: (x, y, z, ...) Matrices: [x, y, z; a, b, c; ...] Pre-defined functions and constants User-defined functions and variables. f(x, y) = xy , x = 5 Root finding using Newton's method (eg. x^2 = 64). Note: estimation and limited to one root Derivative of functions (derivatives of noisy functions or of higher order can be a bit inaccurate). f'(2) , sin'(-pi) Integration. ∫(0, pi, sin(x) dx) or ∫(0, π, sin(x) dx) , maybe sometimes be slightly off Understands fairly ambiguous syntax. Eg. 2sin50 + 2xy Syntax highlighting Special-symbol completion on tab. Eg. write sqrt and press tab. It will be turned into √ Sum function: sum(start, to, expression) Eg. sum(1, 3, 2n+1) is the same as 2 1+1 + 2 2+1 + 2 3+1 = 15 Piecewise functions: f(x) = { f(x + 1) if x <= 1; x otherwise } , pressing enter before typing the final } will make a new line without submitting Load a file including predefined functions and constants. For example, if you're going to use kalker for physics, you load up your file with physics functions/constants when starting kalker. This is done either using the -i file flag or by putting files in a certain directory and then doing load filename inside kalker. More about","default_branch":null,"files":null,"tree":[],"storefront":"/r/PaddiM8","claimed":false,"request_supported":{"post":"https://gitbuyer.com/r/PaddiM8/kalker/request-supported","requests":0},"note":"indexed from public GitHub; nothing is for sale on this page. Clone it from GitHub. Paid listings live at /search."}