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Sir I want to know that how the limits a to b remain same even when f(x)dx with integration sign changes to f(a+b-x)dx with integration sign and how f(x)dx is equal to f(a+b-x)dx what does it signify.

Sir I want to know that how the limits a to b remain same even when f(x)dx with integration sign changes to f(a+b-x)dx with integration sign and how f(x)dx is equal to f(a+b-x)dx what does it signify.

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Grade:12th pass

1 Answers

Arun
25758 Points
2 years ago
Dear student
 
let a+ b – x = t
dx = – dt
 
also limit becomes from b to a
 
Now – sign changes limit from a to b
 
hence wegot same f(t) dt from a to b
 

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