What is the integral from-pi/3 to pi/3 of 8cos(x) ?

The integral from-pi/3 to pi/3 of 8cos(x) is 8sqrt(3)

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integral from-pi/3 to pi/3 of 8cos(x)

\int_{- \frac{π}{3}}^{\frac{π}{3}} 8 cos (x) d x

83

Decimal

13.85640 \dots

Solution steps

\int_{- \frac{π}{3}}^{\frac{π}{3}} 8 cos (x) d x

Take the constant out:

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

= 8 \cdot \int_{- \frac{π}{3}}^{\frac{π}{3}} cos (x) d x

Use the common integral:

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

= 8 [sin (x)]_{- \frac{π}{3}}^{\frac{π}{3}}

Compute the boundaries:

3

= 83

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What is the integral from-pi/3 to pi/3 of 8cos(x) ?
The integral from-pi/3 to pi/3 of 8cos(x) is 8sqrt(3)