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anonymous
 3 years ago
im having a problem understanding integration by substitution. For intance, ∫4xe^(x^2+3)dx. The answer is 2e^(x^2+3) and I am not sure where the 2 comes from.
anonymous
 3 years ago
im having a problem understanding integration by substitution. For intance, ∫4xe^(x^2+3)dx. The answer is 2e^(x^2+3) and I am not sure where the 2 comes from.

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anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0put x^2+3=t so that 2x dx=dt that eq becomes int 2e^t dt =2e^t so that 2 comes in answer.

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0dw:1355916232531:dw

anonymous
 3 years ago
Best ResponseYou've already chosen the best response.0thats how the 2 comes!
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