## bmelyk Group Title find the second and third derivative of: 6/9+x one year ago one year ago

1. bmelyk Group Title

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

2. bmelyk Group Title

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

3. zepdrix Group Title

|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 Group Title

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

5. zepdrix Group Title

Yah first one looks good! :)

6. bmelyk Group Title

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

7. zepdrix Group Title

Hmmm yah looks good.

8. bmelyk Group Title

thx