Also my tutor and I were trying to use the conjugate rule and we thought we were getting close but no luck.
Using the definition of derivative how do i solve this equation: f(x)=5/square root 3x. Please help....? Ive used the fast short cuts to find this derivative but I cant seem to get how to do it by the definition way and i have a test over definition tomorrow. Please help me. im desperate. My answer that i got not using defintion of -5/2x sqroot3x. My tutor couldnt even figure this one out.
so you can pull the 3 out of the top? I wasnt sure.
From there i would do:
[tex](5)(sqrt x)/sqrt(x+h)(sqrt x)-(5)sqrt(x+h)/sqrt(x+h)(sqrt x) /h
But even here im confused. I try to take an h out to remove the bottom denominator but then how will h approach 0?
sorry if im being confusing. Im just really frustrated because this is really the only concept im not getting and my test is tomorrow..
Now, when we evaluate , we have .
Keep in mind, though that we ignored the term in the original problem.
So we can conclude then that if , then , which is what we would expect when differentiating using the shortcuts.
Does this make sense?