Tell me more ×
Mathematics Stack Exchange is a question and answer site for people studying math at any level and professionals in related fields. It's 100% free, no registration required.
up vote 0 down vote favorite

How to sketch: $\csc^{(-1)}(x) \in (0,\frac{\pi}{2}]$

I can sketch the graph of $f(x) = \csc(x)$ fine, and I can see that an inverse does exist on the given interval as a bijection occurs over it; however, I can't seem to see a method to graphing the inverse. The only step I know to take is to make the domain of $\csc(x)$ the range of the inverse and the range of $\csc(x)$ the domain of the inverse. Is it just the half parabola on its side pointing to the right? or how to I graph the inverse correctly?

share|improve this question
You only have to restrict the domain of $\csc$ so that it's one-to-one on that restricted domain, yes? Then you just reflect things over the line $y=x$... – J. M. Apr 28 '12 at 13:14
@J. M.: How do I do this without graphing $\csc(x)$ and $y = x$ and then just sketching in the reflection? How do I find points etc.? – stariz77 Apr 28 '12 at 13:24
...you can rotate your paper by ninety degrees and pretend you're drawing the cosecant backwards? – J. M. Apr 28 '12 at 13:27
@J.M.: Hmm ok, I guess I confused myself. I put a plot command into wolfram alpha and got a weird looking graph, figured it was more in-depth than what I was doing :S – stariz77 Apr 28 '12 at 13:32
You don't even need to draw $y=x$. Draw the cosecant as usual, fold the paper along the appropriate line, and trace... – J. M. Apr 28 '12 at 13:35

Know someone who can answer? Share a link to this question via email, Google+, Twitter, or Facebook.

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Browse other questions tagged or ask your own question.