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anonymous
 5 years ago
how would you integrate the sqrt of
(9x^2) from 3 to 3 . i tried trig sub with x = to 3 sin theta but i get a wrong answer at the end; it get 0
anonymous
 5 years ago
how would you integrate the sqrt of (9x^2) from 3 to 3 . i tried trig sub with x = to 3 sin theta but i get a wrong answer at the end; it get 0

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amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0you will always get a zero.... becuase the left side cancels out the number for the right side

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0you either need to move the graph itself to the right by 3 units and adjust the equation; or integrate half of it: from 0 to 3 and then double your result.

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0or you could do F(a)  F(b) instead and take the absolute value

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.04  4 = 0 4 (4) = 8 8 = 8

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0The left side doesnt cancel the right side. It's an even function, you just did the integral wrong.

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0no is was suposed to use the power reduction formulas for cos squared

anonymous
 5 years ago
Best ResponseYou've already chosen the best response.0after you realize that step the problem is solved

amistre64
 5 years ago
Best ResponseYou've already chosen the best response.0huh... i guess I need to review that part ;) thanx space
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