Numerical Integration Solver

Approximate definite integrals using Simpson's 1/3 Rule for continuous functions.

Function f(x) [Use JS Math syntax, e.g., Math.sin(x) * x**2]

Lower Limit (a)

Upper Limit (b)

Intervals (n) - Must be Even

∫ f(x) dx

0.000000

Simpson's 1/3 Rule:
∫ f(x) dx ≈ (Δx / 3) * [f(x₀) + 4f(x₁) + 2f(x₂) + 4f(x₃) + ... + f(xₙ)]
Where Δx = (b - a) / n