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anonymous
 4 years ago
Why is: (posting question in a reply)...
anonymous
 4 years ago
Why is: (posting question in a reply)...

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[\int\limits_{}^{}853\sqrt(25t)dt\] equal to \[2(25t)^{3/2} + 85t \] and not \[85t  2(25t)^{3/2}\]

TuringTest
 4 years ago
Best ResponseYou've already chosen the best response.1usubstitution\[u=25t\]\[du=dt\to dt=du\]so our integral becomes\[\int\limits_{}^{}3\sqrt(25t)dt=3\int\sqrt udu=2u^{3/2}=2(25t)^{3/2}\]so as you can see, the usub caused the sign on the coefficient to change
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