# Equation of a quadrant (of a circle)

• Sep 2nd 2010, 05:07 PM
Equation of a quadrant (of a circle)
http://img192.imageshack.us/img192/5...hproblem13.png

As the picture implies
I am currently taking a calculus course at a university, and of course we are starting off with some review after forgetting everything over the summer
The section that this question is under is titled "Inverses, logarithms, and exponential functions" but honestly I have no idea what to do
No one even has to solve this, just getting me on the right mental track would be appreciated
• Sep 2nd 2010, 05:32 PM
mr fantastic
Quote:

Originally Posted by Breadordecide
http://img192.imageshack.us/img192/5...hproblem13.png

As the picture implies
I am currently taking a calculus course at a university, and of course we are starting off with some review after forgetting everything over the summer
The section that this question is under is titled "Inverses, logarithms, and exponential functions" but honestly I have no idea what to do
No one even has to solve this, just getting me on the right mental track would be appreciated

In the first instance you would be well-advised to review the material you have forgotten. For example: Do you know what one-to-one means? Do you know what a domain is? Do you know what inverse functions are and how to find them?
• Sep 2nd 2010, 05:39 PM
Since functions are typically written "y= f(x)", I suggest you solve $x^2+ y^2= R^2$ for y. Thinking about the signs of x and y in the four parts of the graph will give you the four functions.