- #1
BOAS
- 552
- 19
Homework Statement
Differentiate the following with respect to x;
y = [itex]x^{2}[/itex][itex](x-1)^{1/2}[/itex]
The Attempt at a Solution
I have a solution to the problem that I will outline below, but my notes on this are confusing and I'm having trouble applying the method to another question. So if you can see the general rule that is being employed, it would really help me if you could point it out.
Let u = [itex]x^{2}[/itex]
Let v = [itex](x-1)^{1/2}[/itex]
[itex]\frac{du}{dx}= 2x[/itex]
[itex]\frac{dv}{dx}= \frac{1}{2}(x - 1)^{-1/2}[/itex]
(that's all fine so far)
[itex]\frac{dy}{dx}= \frac{x^{2}(x-1)^{-1/2}}{2} + 2x(x-1)^{1/2}[/itex]
I have a simplified answer and I can see how to get there, but what rule does the above employ?
Thanks!