How do I find the derivative of the following equation using the product rule?
(x^2-3x+2)(sqrt x)
I put it in the form of the product rule:
(x^2-3x+2)((1/2)x^(-1/2))+(2x-3)(sqrtx)
But I don't know how to simplify this with the square root bit....
I'm not sure what your asking. If you mean by 'putting back to the other form' by reversing the diferentiaation process, that's called integraton and all you would have to do is the power rule backwards. If you mean getting rid of the fractional expoents, just factor out the smallest one like so
And of course there's ways to rationalize the denominator and find the LCD. But I'm sure you can see that. Has this info been helpful?
I'll show you
Easy! Check it out.......
I'm just gonna do the whole problem for you.
Here's the product rule
Right? Right!
So then what do you have?
and since and (by using the power rule and the fact that the derivative of any constant is zero), We end up with the following
Factoring out the least common factor
simplifying
The product rule si good sometimes, but if I were you, I'd try to do problems like these by first multiplying out the expression, and then using the power rule. The product rule is usually reserved for bigger expressions, or expressions that can't be done otherwise.
Peace out homie.......