Numerical Integral Calculator

Compute definite integrals ∫ₐᵇ f(x) dx with Simpson's or the trapezoidal rule and visualize the area.

Function f(x)

Preset

Lower bound a

Upper bound b

Intervals n

Method

Integral ∫ₐᵇ f(x) dx ≈ —

Simpson's rule—

Trapezoidal rule—

Step size h—

Intervals used—

Enter a function, the bounds a and b, and the number of intervals n.