Question 1

What kinds of integrals can this calculator solve?

Accepted Answer

It computes symbolic antiderivatives for polynomials (power rule), sin(x), cos(x), exp(x), 1/x, sqrt(x) and sums and constant multiples of these. For any other function it computes the definite integral numerically using Simpson's rule.

Question 2

How do I compute a definite integral?

Accepted Answer

Enter the lower and upper bounds in the a and b fields. The calculator evaluates the definite integral with composite Simpson's rule and shows the numeric value plus a shaded area plot.

Question 3

Why is the antiderivative shown as 'numeric only' for some functions?

Accepted Answer

Symbolic integration is much harder than differentiation. This tool covers the most common textbook forms; for functions outside that set it falls back to a high-accuracy numerical approximation for the definite integral.

Question 4

Is my data sent anywhere?

Accepted Answer

No. All parsing, integration and plotting happens locally in your browser. Nothing is uploaded.