Think what can you multiply the expression by that will lead to the expression to a difference of two squares?
Darn professors....wish mine explained things...
How do I find f`(a) for
Thats the square root of 3x+1, double thanks to someone who shows me how to put that in there.
I have only seen f(x) - f(a)/x-a and f(a + h) - f(a)/h, so no dx or whatever that stuff is please.
Check this out:
Difference of two squares - Wikipedia, the free encyclopedia
Although the expression may be under the square root operation you may still use the technique found in the link above.