## anonymous one year ago Find the derivative of the function by the limit process. f(x) = 7 x

1. anonymous

my guess is it is $f(x)=\frac{7}{x}$so $f'(x)=\lim_{h\to 0}\frac{\frac{7}{x+h}-\frac{7}{x}}{h}$

2. anonymous

forgetting the limit for the time being, your job is to "simplify" the complex fraction $\frac{\frac{7}{x+h}-\frac{7}{x}}{h}$

3. anonymous

ignore the $$h$$ in the denominator, we can put that in later subtract $\frac{7}{x+h}-\frac{7}{x}$ what do you get ?