Question

Which intervals show f(x) increasing? choose two options

Answer 1

Answer:

A function f is increasing on an interval if for every x1, x2; x1  x2, f(x1)  f(x2). A function f is decreasing on an interval.

If for every x1, x2; x1  x2, f(x2)  f(x1).

So, here for intervals  [–2.5, –2] and [1.5, 2] f(x) is increasing while for [–2, –1.5] and [2, 2.5] it is decreasing.

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Answer 2

ANSWER.

1. [-2.5,-1.6)
2. [-2,-1]

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