just want to make sure i'm doing this problem right, any help is appreciated.

find derivative:

log7x^2-1

= log7 + logx^2-1

= lnx^2-1 / ln7

=ln(x+1)(x-1) / ln7

= 1/ln7 + (1/x+1 * 1/x-1)

??

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- Apr 25th 2010, 07:58 PMJGaraffaderivative of log function
just want to make sure i'm doing this problem right, any help is appreciated.

find derivative:

log7x^2-1

= log7 + logx^2-1

= lnx^2-1 / ln7

=ln(x+1)(x-1) / ln7

= 1/ln7 + (1/x+1 * 1/x-1)

?? - Apr 25th 2010, 08:03 PMProve It
- Apr 25th 2010, 08:04 PMsuperman123
Here is the way to find the derivative of log functions;

$\displaystyle \frac{Derivative~of ~inside~of~ log}{inside~ of~ log}$

Is you function $\displaystyle \log(7x^2-1)$?

If yes, from the above rule $\displaystyle \frac{Derivative~of ~7x^2-1}{7x^2-1}=\frac{14x}{7x^2-1}$ - Apr 27th 2010, 05:30 PMJGaraffa
ah i knew i forgot brackets somewhere.

the original problem was

log7(x^2-1)