Symmetry About a Point

Rarely Tested

Symmetry About a Point

For a function satisfying:

$$f(a+b-x)=f(x)$$

we have:

$$\int_a^b f(x)\,dx=2\int_a^{\frac{a+b}{2}}f(x)\,dx$$

Usage

- Used when the integrand has symmetry about the midpoint of the integration interval.

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