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tiffcarina69
04.04.2020 •
Mathematics
Given f(x) = x2 + 2x + 9, find the average rate of change of f(x) over each of the following pairs of intervals. (a) [1.9, 2] and [1.99, 2] average rate of change over [1.9, 2] 5.9 Correct: Your answer is correct. average rate of change over [1.99, 2] 5.99 Correct: Your answer is correct. (b) [2, 2.1] and [2, 2.01] average rate of change over [2, 2.1] 6.1 Correct: Your answer is correct. average rate of change over [2, 2.01] 6.01 Correct: Your answer is correct. (c) What do the calculations in parts (a) and (b) suggest the instantaneous rate of change of f(x) at x = 2 might be?
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Ответ:
Required average rate of change over the interval [1.9, 2] is 5.9, [1.99, 2] is 5.99, [2, 2.1] is 6.1, [2, 2.01] is 6.01 and the instantaneous change at x=2 is 6.
Step-by-step explanation:
Given function is,
To find the avarage rate of change over given intervals. We know from Lagranges Mean value theorem, the average rate of change of a function F(x) over a interval
is,
.
(a) On the interval,
[1.9, 2](b) On the interval,
[2, 2.1](c) Instantaneous rate of change at x=2 is,
Hence the results.
Ответ:
Not sure what your choices are on the drop-down, but these expressions are equivalent to each other and include all solutions (all real numbers).
Edit:
1--Equivalent
2--29
3--Equivalent