I would like to simplify: $\displaystyle \sqrt{e^{-2t} + e^{2t} + 2}$, as I have to take the integral of this
Follow Math Help Forum on Facebook and Google+
Originally Posted by jenkki I would like to simplify: $\displaystyle \sqrt{e^{-2t} + e^{2t} + 2}$, as I have to take the integral of this Just a little algebra gets us: $\displaystyle \sqrt{e^{-2t} + e^{2t} + 2}=\dfrac{e^{2t}+1}{e^t}$
Here's one more hint for you in case you don't see the "intermediary steps" in Plato's computation. Compute $\displaystyle (e^t+e^{-t})^2$ by FOILing.
View Tag Cloud