I'm currently stuck on this problem: I tried using the product rule and got , which is wrong. I'm not sure what to try now. Any help would be appreciated. Thanks!
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Did you try simplifying it: Notice that both terms in the derivative share both a $\displaystyle e^t$ and a $\displaystyle sech(t)$ so that you can pull them out to get: $\displaystyle f'(t) = e^tsech(t)(1 - tanh(t))$
Yeah that was right. Just wasn't simplified enough. Thanks so much!
Originally Posted by fleabass123 I'm currently stuck on this problem: I tried using the product rule and got , which is wrong. I'm not sure what to try now. Any help would be appreciated. Thanks! What makes you think its wrong?
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