SOLUTION: Find the instantaneous rate of change of f(x)=x^2-(2/x)+4 at x=-1 A. -7 B. -4 C. 0 D. 4 E.7

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Question 1098779: Find the instantaneous rate of change of f(x)=x^2-(2/x)+4 at x=-1
A. -7 B. -4 C. 0 D. 4 E.7
Found 4 solutions by josgarithmetic, greenestamps, ikleyn, MathTherapy:
Answer by josgarithmetic(39620)   (Show Source): You can put this solution on YOUR website!




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-----------rate of change when x is NEGATIVE 1.
Answer by greenestamps(13200)   (Show Source): You can put this solution on YOUR website!

The instantaneous rate of change of a function f(x) at x=1 is the derivative of the function, evaluated at x=1.

f(x) = x^2-(2/x)+4 = x^2 -2x^(-1)+4
f'(x) = 2x+2x^(-2)
f'(1) = 2+2 = 4
Answer by ikleyn(52802)   (Show Source): You can put this solution on YOUR website!
.
Find the instantaneous rate of change of f(x)=x^2-(2/x)+4 at x=-1
A. -7 B. -4 C. 0 D. 4 E.7
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

The correct answer is  0  (zero).

Option  C).




Plot y =


Answer by MathTherapy(10552)   (Show Source): You can put this solution on YOUR website!

Find the instantaneous rate of change of f(x)=x^2-(2/x)+4 at x=-1
A. -7 B. -4 C. 0 D. 4 E.7 
Correct answer: 

IGNORE all other WRONG/INCORRECT/RIDICULOUS answers. 

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