Differentiation Questions

**Paymemoney** · December 14th 2009, 12:26 AM

Hi
Having troubling differentiating the following question and need some help:
1) $\frac{4x^2+2x}{x^2}$
2) $\frac{2z^2-4z}{z^2}$

P.S

**craig** · December 14th 2009, 02:12 AM

Originally Posted by Paymemoney

Hi
Having troubling differentiating the following question and need some help:
1) $\frac{4x^2+2x}{x^2}$
2) $\frac{2z^2-4z}{z^2}$

P.S

For your first one, you can split this into two different fractions.

$\frac{4x^2+2x}{x^2} = \frac{4x^2}{x^2} + \frac{2x}{x^2}$

$4 + 2x^{-1}$

Which I'm sure you can differentiate.

Use a similar method for the second questions.

**Paymemoney** · December 14th 2009, 02:35 AM

ok thanks, i know how to do it now

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