how do you enter the square root of 1+(f(x)^2 for an arc length problem in a TI-89 calculator?  What are the step by step instructions like ie; press sq.rt. button then press...and so on.
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I need to find the arc length of a problem in the calculator ( not by hand)  I need to know how to enter this in the calculator with derivatives and integrals with step by step instructions.  How do we put an integral arc length from a to b in the TI-89 calculator?
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