Posted by **Bailey** on Friday, June 19, 2009 at 5:58am.

Hi, please help! How do i do this?

differentiate (2ax^2 + bx)/(bx^3 - cx)

- Maths Differentiation -
**Writeacher**, Friday, June 19, 2009 at 7:45am
Bailey, Andrea, Danny, Riley, anabelle, holly, LILLY, zachary, I'm stumped -- or whoever!

To quote one of our very good math and science tutors: You will find here at Jiskha that long series of questions, posted with no evidence of effort or thought by the person posting, will not be answered. We will gladly respond to your future questions in which **your thoughts** are included.

- Maths Differentiation -
**drwls**, Friday, June 19, 2009 at 8:25am
Treat the function as the ratio

f(x) = u(x)/v(x)

and use the formula for the derivative of the ratio of two functions

df/dx = [v du/dx - u dv/dx ]/ v^2

The rest is easy.

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