## bmelyk 3 years ago find the second and third derivative of: 6/9+x

1. bmelyk

for my first derivative i had $\frac{ -6 }{ (9+x)^2 }$

2. bmelyk

my second i had: $\frac{ x^2-27x+6 }{ (9+x)^4 }$ is that one right?

3. zepdrix

|dw:1352139362045:dw| Hmm this is what I'm coming up with, It's probably easier to apply the power rule instead of .. quotient rule or whatever you did there :o

4. bmelyk

so thats the second derivative, did i have the first one right?

5. zepdrix

Yah first one looks good! :)

6. bmelyk

and is the third: $\frac{ 36 }{ (9+x)^4 }$

7. zepdrix

Hmmm yah looks good.

8. bmelyk

thx