Math • Graphing

Graphing Calculator

Advanced graphing: Cartesian y=f(x), polar r(θ) and parametric x(t),y(t) with pan, zoom, grid, table, roots and intercept analysis.

y =X minX maxAngle

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Graph info

Table (sample)

Use pi, e, ^ for power, sin, sqrt etc. Drag to pan, wheel to zoom. Polar uses θ in chosen angle mode.

How to use

1Choose Cartesian, Polar or Parametric. Enter the expression (e.g., sin(x), 2*cos(theta), cos(t) / sin(t)).
2Set the range (X min/max or θ/t range) and angle mode. Click Plot.
3Drag to pan, wheel to zoom, use +/− buttons. Table shows sampled points; info shows roots and y-intercept.

Behind the plot

Cartesian: sample y=f(x) over 800 points • Polar: x=r·cosθ, y=r·sinθ • Parametric: (x(t), y(t))

Expressions are evaluated by the scientific parser, so you can use pi, e, ^, sqrt, sin, log etc. Gaps (e.g., 1/x at 0) break the line. Roots are found where y changes sign and linearly interpolated.

Examples

y = x^2 from -2 to 2

Parabola through (0,0) with roots none; table 0→0, 1→1, 2→4.

Points (-2,4)…(2,4)

Polar r = 2·cos(θ)

Circle radius 1 centered at (1,0).

θ 0→2, π/2→0

About

The Graphing Calculator plots Cartesian, polar, and parametric functions using a precise expression parser. Type a function such as y = sin(x), set the range and angle mode, and plot instantly with pan, zoom, and a value table. The tool identifies roots and intercepts for Cartesian functions and handles gaps like asymptotes by breaking the curve. Students, teachers, and engineers use it to visualize equations, explore families of curves, and check function behavior without a separate graphing device. It requires no installation and runs entirely in the browser.