Find the average rate of change for the function f(x) =x^2 -6x+2 on the closed side interval (-5,2)

Question

Find the average rate of change for the function f(x) =x^2 -6x+2 on the closed side interval (-5,2)

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Thiên Ân 21 hours 2021-07-22T06:57:48+00:00 1 Answers 0 views 0

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    2021-07-22T06:58:59+00:00

    Answer:

    – 9

    Step-by-step explanation:

    The average rate of change of f(x) in the closed interval [ a, b ] is

    \frac{f(b)-f(a)}{b-a}

    Here [a, b ] = [ – 5, 2 ], thus

    f(b) = f(2) = 2² – 6(2) + 2 = 4 – 12 + 2 = – 6

    f(a) = f(- 5) = (- 5)² – 6(- 5) + 2 = 25 + 30 + 2 = 57 , thus

    average rate of change = \frac{-6-57}{2-(-5)} = \frac{-63}{7} = – 9

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )