SOLUTION: If f(x)= -2/x+3, what would be the simplest form of f(x+h)-f(x)/h assuming that h ≠ 0
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Question 1094525: If f(x)= -2/x+3, what would be the simplest form of f(x+h)-f(x)/h assuming that h ≠ 0
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
=[f(x+h)-f(x)]/h is the average rate of change of the function between and .
For , with , it is
For this problem, the meaning of "simplest" is whatever the teacher thinks it is.
As the expression is used to introduce the concept of derivative,
I would expect that is what the teacher had in mind.
NOTE: When you type expressions into a computer or calculator,
you should make sure you type the parentheses that were implied in those long fraction bars we can write on paper:
=[f(x+h)-f(x)]/h , but f(x+h)-f(x)/h= ,
-2/x+3= , and =-2/(x+3)
Forgetting to type some of those parentheses implied by other grouping symbols may lead to wrong results.
If you type "0.732-0.002/0.713-0.003" into a calculator, you are likely to get
0.732-0.002/0.713-0.003= , and that is approximately ,
because most calculators know about order of operations.
If what you meant was
(0.732-0.002)/(0.713-0.003)= ,
you got the wrong result.
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