Master Curve Sketching 1: Tips and Tricks for Perfect Graphs

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1

The attempt at a solution:

For part a) I got the following:

I'm stuck on part b). I've tried to take the maclaurin series of coth x to see what the function does when T→0 and T→∞

 

[mfb]

I've tried to take the maclaurin series of coth x to see what the function does when T→0 and T→∞

What was the result of this?