I'm struggling with the domain and range for some more complicated functions. I've been doing them by looking at the graph but I don't know how to do it without one.
2. (2x^1/2) +1
4. Inverse e^x
5. Inverse 2x+1
And how to find the inverse function of a trigonometric function e.g. 2cos^-1 (x-1).
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