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1/2(`e^(x)` +`e^(-x)` )+1/2(`e^(x)` -`e^(-x)` /1/2(`e^(x)` +`e^(-x)` )-1/2(`e^(x)`...
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High School Teacher
I am answering your question ,though some problem in understanding because of not use of brackets.
You can use following laws of exponents.
`x^m xx x^n=x^(m+n)`
`=e^x xx (1/e^(-x))`
`=e^x xx e^x`
Posted by aruv on June 19, 2013 at 7:16 AM (Answer #2)
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