Find the indefinite integral using integration by parts with the given choices of u and dv. x cos 9x dx; u = x, dv = cos 9x dx Step 1 Since dv = cos( cos(9 9 x) dx, integrate the differential equation to obtain the function v. V = cos(9 9 x) dx %3D sin 9x Also, u = x. Therefore, the differential is du = dr dr Step 2 To find the integral x cos 9x dx by the parts formula, use u = x and v = sin 9x, as used in the previous step. Apply the rule of integration by parts. dv = uv - du

Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
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What is the answer for step 2
Find the indefinite integral using integration by parts with the given choices of u and dv.
x cos 9x dx; u = x, dv = cos 9x dx
Step 1
Since dv = cos(
cos(9
9 x) dx, integrate the differential equation to obtain the function v.
dv
cos(9
9 x) dx
%3D
sin 9x
6.
Also, u = x. Therefore, the differential is du =
dr
dr
Step 2
To find the integral
x cos 9x dx by the parts formula, use u = x and v =
sin 9x, as used in the previous
step.
Apply the rule of integration by parts.
dv = uv -
du
Transcribed Image Text:Find the indefinite integral using integration by parts with the given choices of u and dv. x cos 9x dx; u = x, dv = cos 9x dx Step 1 Since dv = cos( cos(9 9 x) dx, integrate the differential equation to obtain the function v. dv cos(9 9 x) dx %3D sin 9x 6. Also, u = x. Therefore, the differential is du = dr dr Step 2 To find the integral x cos 9x dx by the parts formula, use u = x and v = sin 9x, as used in the previous step. Apply the rule of integration by parts. dv = uv - du
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