• May 22nd 2010, 09:40 PM
brumby_3
If f(x) = sqrt(x+4), use a calculator to compute [f(4+h)-f(2)]/h for h =
±0.1, ±0.05

So do I just put f(x) in place of the f's when putting into my calculator and do the negative and positive for each ± correct?
• May 22nd 2010, 09:42 PM
dwsmith
Quote:

Originally Posted by brumby_3
If f(x) = sqrt(x+4), use a calculator to compute [f(4+h)-f(2)]/h for h =
±0.1, ±0.05

So do I just put f(x) in place of the f's when putting into my calculator and do the negative and positive for each ± correct?

$\frac{f(4+h)-f(2)}{h}=\frac{\sqrt{(4+h)+4}-\sqrt{2+4}}{h}$
• May 26th 2010, 07:13 PM
brumby_3
So I need to plug the negative and positive of each number into the function to get the answer?
• May 26th 2010, 07:42 PM
pickslides
Yep, four problems to complete.