What is the integral from 0 to pi of cos(2θ) ?

The integral from 0 to pi of cos(2θ) is 0

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integral from 0 to pi of cos(2θ)

\int_{0}^{π} cos (2 θ) d θ

0

Solution steps

\int_{0}^{π} cos (2 θ) d θ

Apply u-substitution

: \int_{0}^{2 π} cos (u) \frac{1}{2} d u

= \int_{0}^{2 π} cos (u) \frac{1}{2} d u

Take the constant out:

\int a \cdot f (x) d x = a \cdot \int f (x) d x

= \frac{1}{2} \cdot \int_{0}^{2 π} cos (u) d u

Use the common integral:

\int cos (u) d u = sin (u)

= \frac{1}{2} [sin (u)]_{0}^{2 π}

Compute the boundaries:

0

= \frac{1}{2} \cdot 0

Simplify

= 0

\int_{0}^{2} 4 x^{3} - 3 x^{2} + 2 x d x

\frac{( 3 s + 5 )}{( s - 5 ) ( s + 2 )}

\int \frac{4 x}{x ^{2} + 9} d x

\frac{d}{d x} ((x^{3} + 1) e^{x})

\frac{1}{2 x + 2}

What is the integral from 0 to pi of cos(2θ) ?
The integral from 0 to pi of cos(2θ) is 0