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Sorry, I'm having a severe mental block here, sorry if this is laughable.
Question
Expand (e^x + e^-x)^2
I've got the answer but I'm just stumped at how to reach it, I don't know where the 2 comes from:
Answer
e^2x + 2 + e^-2x
Thanks (and sorry again)
Question
Expand (e^x + e^-x)^2
I've got the answer but I'm just stumped at how to reach it, I don't know where the 2 comes from:
Answer
e^2x + 2 + e^-2x
Thanks (and sorry again)