What is the integral from-2 to-1 of 1/((11+5x)^3) ?

The integral from-2 to-1 of 1/((11+5x)^3) is 7/72

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integral from-2 to-1 of 1/((11+5x)^3)

\int_{- 2}^{- 1} \frac{1}{( 11 + 5 x ) ^{3}} d x

\frac{7}{72}

Decimal Notation

0.09722 \dots

Solution steps

\int_{- 2}^{- 1} \frac{1}{( 11 + 5 x ) ^{3}} d x

Apply u-substitution

: \int_{1}^{6} \frac{1}{5 u ^{3}} d u

= \int_{1}^{6} \frac{1}{5 u ^{3}} d u

Take the constant out:

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

= \frac{1}{5} \cdot \int_{1}^{6} \frac{1}{u ^{3}} d u

Apply the Power Rule

: [- \frac{1}{2 u ^{2}}]_{1}^{6}

= \frac{1}{5} [- \frac{1}{2 u ^{2}}]_{1}^{6}

Compute the boundaries:

\frac{35}{72}

= \frac{1}{5} \cdot \frac{35}{72}

Simplify

= \frac{7}{72}

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What is the integral from-2 to-1 of 1/((11+5x)^3) ?
The integral from-2 to-1 of 1/((11+5x)^3) is 7/72