- #1

- 67

- 0

F(y)= (1/y[tex]^{}2[/tex] - 3/y[tex]^{}4[/tex])(y+5y[tex]^{}3[/tex])

## Homework Equations

the answer is: F[tex]\acute{}(y)[/tex]=5+14/y[tex]^{}2[/tex]+9/y[tex]^{}4[/tex]

## The Attempt at a Solution

In order to use the product formula I brougth the first parenthesis to a common denominator y[tex]^{}4[/tex] and then tried to use the product formula to find the derivative (it didnt work), then I tried subracting 1/y[tex]^{}2[/tex] from 3/y[tex]^{}4[/tex]and then tried to use the product rule. I can't figure out how to use the product/quotient formula to find the derivative, although I have the answer I want to know how to work the problem out.