What is the integral from 2 to 4 of x/((x^2+1)^3) ?

The integral from 2 to 4 of x/((x^2+1)^3) is 66/7225

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integral from 2 to 4 of x/((x^2+1)^3)

\int_{2}^{4} \frac{x}{( x ^{2} + 1 ) ^{3}} d x

\frac{66}{7225}

Decimal Notation

0.00913 \dots

Solution steps

\int_{2}^{4} \frac{x}{( x ^{2} + 1 ) ^{3}} d x

Apply u-substitution

: \int_{5}^{17} \frac{1}{2 u ^{3}} d u

= \int_{5}^{17} \frac{1}{2 u ^{3}} 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_{5}^{17} \frac{1}{u ^{3}} d u

Apply the Power Rule

: [- \frac{1}{2 u ^{2}}]_{5}^{17}

= \frac{1}{2} [- \frac{1}{2 u ^{2}}]_{5}^{17}

Compute the boundaries:

\frac{132}{7225}

= \frac{1}{2} \cdot \frac{132}{7225}

Simplify

= \frac{66}{7225}

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What is the integral from 2 to 4 of x/((x^2+1)^3) ?
The integral from 2 to 4 of x/((x^2+1)^3) is 66/7225