Quick derivitive ?

1. Feb 24, 2008

2slowtogofast

y = ln|2-x-5x^2|

when you take the derivitve of somthing like this you can ignore the abs value signs right?

for the ans i got -1-10x / 2-x-5x^2
the answer is 1+10x / -2+x+5x^2

i obviously made some mistake some where because i have the same number just with different signs

2. Feb 24, 2008

Tedjn

The two answers are the same. If the first answer is given by $-a/b[/tex], the second one would be [itex]a/-b$. The negative is just in a different place.

3. Feb 24, 2008

2slowtogofast

thanks i didt see that

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