, 12.11.2019 04:31, bbygrill

# The answer is supposed to be -2(e^x - e^-x)/(e^x + e^-x)^2 but i’m not sure how to get there because my answer always ends up as -2(e^x + e^-x)/(e^x+e^x)^2, so i’m not sure where i’m missing the negative or if the answer key has a typo.

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