Hi guys, I'm doing chain rule problems to practice for exam:

I've encountered: y = (e^u - e^-u)/(e^u + e^-u)

I've gotten: dy/du = 4/(e^u + e^-u)^2

Is this the correct simplified answer? Thanks for the look!

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- November 2nd 2010, 07:44 PMDannyMathHave I gotten to the correct answer?
Hi guys, I'm doing chain rule problems to practice for exam:

I've encountered: y = (e^u - e^-u)/(e^u + e^-u)

I've gotten: dy/du = 4/(e^u + e^-u)^2

Is this the correct simplified answer? Thanks for the look! - November 2nd 2010, 08:07 PMtonio