# Differentiation of a function

1. Feb 4, 2007

### elton_fan

hi all
i need a derivative of this function f(t)=100t/2t+15

thanks a lot

2. Feb 4, 2007

### ranger

You need to show us your attempt. Are you familiar with the quotient rule and so on?

3. Feb 4, 2007

### Hurkyl

Staff Emeritus
FYI, you wrote

$$f(t)=\frac{100t}{2t}+15$$

Is that what you meant? If you meant to write

$$f(t)=\frac{100t}{2t+15}$$

then you need to use parentheses.

4. Feb 5, 2007

### Schrodinger's Dog

I'm almost certain he means the later, or the answer is pretty basic in fact it barely requires calculus.

$$f(t)=\frac{100t}{2t+15}$$

Have you tried the quotient rule? Please show working?