A plane flies from New York to Los Angleles at a constant speed of 800 km/hr. If the distnace from New York to Los Angeles is 40
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Answer:
Step-by-step explanation:
Given is a function
Average slope of this function is change of f(x) in (-2,6)/change of x in (-2,6)
=
By mean value theorem there exists a c such that f'(c) = -18
i.e.
Using quadratic formula
x = 2.61, -1.277
Out of these only 2.61 lies in the given interval
c = 2.61
The formula of a slope:
We have the points A(-7, a) and B(c, d).
Substitute:
Exception: c ≠ -7.