Would a substitution help?

Calculus Level pending

If ∫ a b x f ( 2 x + 1 ) d x = 5 \displaystyle \int_a^b x f(2x+1) \, dx = 5 , then what is the value of ∫ a − 2 b − 2 ( 2 x + 4 ) f ( 2 x + 5 ) d x \displaystyle \int_{a-2}^{b-2} (2x+4)f(2x+5) \, dx ?


The answer is 10.

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Majed Musleh by Majed Musleh , 28, Palestine

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Majed Musleh
Jun 11, 2015

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