Question about function

Jul 2008
212
2
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?
 

dwsmith

MHF Hall of Honor
Mar 2010
3,093
582
Florida
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?
\(\displaystyle \frac{f(4+h)-f(2)}{h}=\frac{\sqrt{(4+h)+4}-\sqrt{2+4}}{h}\)
 
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Jul 2008
212
2
So I need to plug the negative and positive of each number into the function to get the answer?
 

pickslides

MHF Helper
Sep 2008
5,237
1,625
Melbourne
Yep, four problems to complete.