What is the integral from 1 to 2 of (v^4+3v^7)/(v^5) ?

The integral from 1 to 2 of (v^4+3v^7)/(v^5) is ln(2)+7

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integral from 1 to 2 of (v^4+3v^7)/(v^5)

\int_{1}^{2} \frac{v ^{4} + 3 v ^{7}}{v ^{5}} d v

ln (2) + 7

Decimal

7.69314 \dots

Solution steps

\int_{1}^{2} \frac{v ^{4} + 3 v ^{7}}{v ^{5}} d v

Simplify

\frac{v ^{4} + 3 v ^{7}}{v ^{5}} : \frac{1 + 3 v ^{3}}{v}

= \int_{1}^{2} \frac{1 + 3 v ^{3}}{v} d v

Expand

\frac{1 + 3 v ^{3}}{v} : \frac{1}{v} + 3 v^{2}

= \int_{1}^{2} \frac{1}{v} + 3 v^{2} d v

Apply the Sum Rule:

\int f (x) \pm g (x) d x = \int f (x) d x \pm \int g (x) d x

= \int_{1}^{2} \frac{1}{v} d v + \int_{1}^{2} 3 v^{2} d v

\int_{1}^{2} \frac{1}{v} d v = ln (2)

\int_{1}^{2} 3 v^{2} d v = 7

= ln (2) + 7

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What is the integral from 1 to 2 of (v^4+3v^7)/(v^5) ?
The integral from 1 to 2 of (v^4+3v^7)/(v^5) is ln(2)+7