   Chapter 6.1, Problem 12E ### Calculus: An Applied Approach (Min...

10th Edition
Ron Larson
ISBN: 9781305860919

#### Solutions

Chapter
Section ### Calculus: An Applied Approach (Min...

10th Edition
Ron Larson
ISBN: 9781305860919
Textbook Problem
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# Integration by Parts In Exercises 5-16, use integration by parts to find the indefinite integral, See Examples 1, 2, 3, and 4. ∫ x 2 e 7 x d x

To determine

To calculate: The value of indefinite integral x2e7xdx.

Explanation

Given Information:

The provided indefinite integral is x2e7xdx.

Formula used:

The integration by parts udv=uvvdu.

Where, u and v are function of x.

eaxdx=eaxa+C

Calculation:

Consider the indefinite integral x2e7xdx

Here,

dv=e7xdx and u=x2

First find v,

dv=e7xdxdv=e7xdx

On further solving,

v=e7x7 …...…... (1)

Now find du,

u=x2

Differentiate both side with respect x,

dudx=d(x2)dxdudx=2x

And,

du=2xdx …...…... (2)

Apply integration by parts formula and substitute equation (1) and (2) in udv=uvvdu,

x2e7xdx=17x2e7x27xe7xdx

Use integration by parts on the second integral xe7xdx

Here,

dv=e7xdx and u=x

First find v,

dv=e7xdxdv=e7xdx

On further solving,

v=e7x7 …...…... (3)

Now find du,

u=x

Differentiate both sides with respect x,

dudx=d(x)dxdudx=1

And,

du=1dx

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