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Textbook Expert
Textbook ExpertVerified Tutor
3 Jan 2022

Given information

Given

       

Step-by-step explanation

Step 1.
 
Substitution:
 
New limits:
 
So:
 
 
 We remove the negative sign before the integral by exchanging integral limits.
  We can use any letter to express the variable. Use of or any other is indifferent (its equivalent to to make the substitution )

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