I'm meant to put coth(x) in terms of e^x and e^-x. I keep end up getting the wrong answer and I have no idea how to do it.
My final answer is
Those of you that can actually do this probably thinking 'How on earth did he come to that?'
Which you may think is ridiculous but the only other time i had used that method was in removing surds from the denominator and you changed the sign of what you were multiplying it by to remove the sqrt.
Anyway, thankyou for that and thanks to Manx for asking the exact same thing as I would have done lol.