What is the integral from 0 to pi of (1+cos(x)) ?

The integral from 0 to pi of (1+cos(x)) is pi

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integral from 0 to pi of (1+cos(x))

\int_{0}^{π} (1 + cos (x)) d x

π

Decimal

3.14159 \dots

Solution steps

\int_{0}^{π} 1 + cos (x) d x

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int_{0}^{π} 1 d x + \int_{0}^{π} cos (x) d x

\int_{0}^{π} 1 d x = π

\int_{0}^{π} cos (x) d x = 0

= π + 0

Simplify

= π

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What is the integral from 0 to pi of (1+cos(x)) ?
The integral from 0 to pi of (1+cos(x)) is pi