I need help with finding the length of a plane curve y=2x^3/2 from x=4 to x=16

Thank you

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- Feb 16th 2010, 12:05 PMmacadamianchicaFind length of a plane curve y=2x^3/2 from x=4 to x=16
I need help with finding the length of a plane curve y=2x^3/2 from x=4 to x=16

Thank you - Feb 16th 2010, 12:32 PMKrizalid
straightforward.

show us what you've done to see where's your problem. - Feb 16th 2010, 12:35 PMmacadamianchica
So I did a integral on the square root of 1+[F'(x)]^2 dx from 4 to 16 and then I used a u substitution for 1+9x and got 112.66. But not sure if I did it right.

- Feb 16th 2010, 12:37 PMKrizalid
it's correct.