Plot mathematical functions, overlay derivatives, and find roots — supports sin, cos, log, powers and more
Supports: + − × ÷ ^, sin cos tan asin acos atan, sqrt abs exp, ln (base e), log (base 10), sinh cosh tanh, pi, e, implicit multiplication (2x, 3sin(x)).
Plot up to four functions simultaneously with automatic y-scaling, labeled grid lines, numerically-computed derivative overlays, and root finding via bisection (circles on the x-axis). Everything is evaluated with a built-in expression parser — no data leaves your browser. Great for calculus homework, checking algebra, and visualizing function behavior before an exam.
Your data stays private. All processing happens locally in your browser. No data is collected, stored, or sent to any server.