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**Finding an arc length**

I am attempting to find the arc length of y = cuberoot[x] between (1,1) and (8,2).

I solved the integral from 1 to 2 of sqrt[1+(3y^2)^2]dy. I used a formula from a table of integrals in my text to solve this integral. The solution I get is 68.19. I can see that this is not a reasonable answer. Is my setup incorrect or am I solving the integral incorrectly?

Thanks for any help.

Steve

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