Posted by **Anonymous** on Sunday, October 7, 2012 at 10:15pm.

What is the derivative of (x^2+4x+5)/(x^3-2x)?

- Math -
**Reiny**, Sunday, October 7, 2012 at 10:31pm
quotient rule !

dy/dx = ( (x^3 - 2x)(2x + 4) - (x^2 + 4x + 5)(3x^2 - 2) )/(x^3 - 2x)^2

= etc

- Math -
**Anonymous**, Sunday, October 7, 2012 at 10:34pm
I know you use quotient rule. Is the answer (-x^4-8x^3-17x^2+8x+10)/(x^3-2x)^2

Thanks Reiny!

- Math -
**Reiny**, Sunday, October 7, 2012 at 10:42pm
If you are taking Calculus, surely you should have no difficulty expanding and simplifying

(x^3 - 2x)(2x + 4) - (x^2 + 4x + 5)(3x^2 - 2)

I will leave that up to you to check if your answer is correct.

(hint: the answer is yes)

## Answer This Question

## Related Questions

- math - Let f be a real value function and x Î Df then 0 lim ( ) ( ) h f x h f x...
- math derivative please help - the derivative of 2x^e is zero right or no? do i ...
- Math Derivative - Find derivative of f(x)=g(h(x)) Would the derivative be ...
- math - Find the derivative of y=3x-2(4^x) Here is my attempt: Derivative of 3x ...
- Calculus--> bobpursley - How do you get m=0? from taking the second ...
- Math (Derivative) - Computer the derivative of f(x)=x-(1/x) for x>0 using the...
- Derivatives- Math - Can someone explain how to find the derivative of : 1. y= 5...
- calc - derivative of (x^3/6)+(1/2x)? i got (x^2/2)-(1/2x^2) is that correct? and...
- Math (Derivative) - Compute derivative using the definition of the derivative. f...
- Calculus - derivatives - Okay, I want to find the derivative of (x^x)^(x^x)... ...

More Related Questions