Posted by **Michelle** on Saturday, October 4, 2008 at 12:30am.

Using the derivative definition of f ‘ (x) = (f (x+h) – f (x)) / (h) find the derivatives of the following…

1. f(x) = (2x-1) / (x+2)

2. f(x) = sqrt (3x-1)

3. f(x) = 3x^4

my answers were:

1. –x+3

2. (3) / [2(sqrt(3x-1))]

3. 12x^3

are my answers right?

## Answer this Question

## Related Questions

- Calculus derivatives - f(a) = a + √a (a) Find the derivative of the ...
- calculus - Find the derivative of the function using the definition of ...
- Calculus 1 - Could you please explain how to find the slope using the definition...
- Calculus - derivatives - Okay, I want to find the derivative of (x^x)^(x^x)... ...
- Maths Calculus Derivatives & Limits - Using the definition of the derivative ...
- calculus - sqrt(x^2 - 9) / x I need to solve this using the definition of a ...
- Calculus (Derivatives) - Using the product rule, find the derivative of the ...
- Calculus - show that the curves r=asin(è) and r=acos(è) intersect at right ...
- math - find derivative using limit definition: f(x) = x - sqrt(x) so f'(x) = lim...
- Applied Calculus - Find the first and second derivative of the function: x/(7x+...