Hi! I was wondering if anyone could help me solve for x in this problem: (e^x+e^-x)/(3)=4 Thanks!
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Originally Posted by KDonicki Hi! I was wondering if anyone could help me solve for x in this problem: (e^x+e^-x)/(3)=4 Thanks! $\displaystyle e^x + e^{-x} = 12 \mbox{ and let }y=e^{-x}$ $\displaystyle y+\frac{1}{y} = 12 \implies y^2 + 1 = 12 y$ Quadradic equation, which you can solve.
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