## anonymous 5 years ago what would be the radical and exponential form of a radical expression?

1. anonymous

*rational expression

2. anonymous

$\sqrt {2}=2^{\frac {1}{2}}$\ Radical and Exponential forms, respectively.

3. anonymous

radical being the root and exponential being the 1/2 i presume.

4. anonymous

Correct. Did you have other questions about ratios and exponents?

5. anonymous

do you know $f^-1(x)$ problems?

6. anonymous

Like this? $f^{-1}(x) = ????$

7. anonymous

exactly! i know it has to do with inverse functions with switching x and y.

8. anonymous

but the way she presented it was in aa long word problem.

9. anonymous

Sounds like generally you know how to find the inverses of a function. { from ::: http://www.uncwil.edu/courses/mat111hb/functions/inverse/inverse.html ::: Steps for finding the inverse of a function f. Replace f(x) by y in the equation describing the function. Interchange x and y. In other words, replace every x by a y and vice versa. Solve for y. Replace y by f-1(x). }}} It would seem that you just need to find a way to parse the word problem into your first equation. Once you have that you can then find the inverse as usual - I would imagine.

10. anonymous

...*inverse* of a function...

11. anonymous

wow thanks for the website reference. you've been a big help. thanks a bunch :0]

12. anonymous

Good luck. Also the Purplemath pages seem pretty good. (revealed after googling: 'inverse of a function'. Good Luck!