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

The integral from 1 to 2 of 1/((2x+1)^2) is 1/15

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integral from 1 to 2 of 1/((2x+1)^2)

\int_{1}^{2} \frac{1}{( 2 x + 1 ) ^{2}} d x

\frac{1}{15}

Decimal Notation

0.06666 \dots

Solution steps

\int_{1}^{2} \frac{1}{( 2 x + 1 ) ^{2}} d x

Apply u-substitution

: \int_{3}^{5} \frac{1}{2 u ^{2}} d u

= \int_{3}^{5} \frac{1}{2 u ^{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_{3}^{5} \frac{1}{u ^{2}} d u

Apply the Power Rule

: [- \frac{1}{u}]_{3}^{5}

= \frac{1}{2} [- \frac{1}{u}]_{3}^{5}

Compute the boundaries:

\frac{2}{15}

= \frac{1}{2} \cdot \frac{2}{15}

Simplify

= \frac{1}{15}

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What is the integral from 1 to 2 of 1/((2x+1)^2) ?
The integral from 1 to 2 of 1/((2x+1)^2) is 1/15