If for all in the open interval

MATHEMATICS · Single correct · CBSE · Mathematics · Applications of Derivatives · Applications of Derivatives

Problem

If f′(x)<0f'(x) < 0 for all xx in the open interval (2,5)(2,5), which statement about ff on (2,5)(2,5) is correct? (a) The function ff is increasing on (2,5)(2,5). (b) The function ff is concave down on (2,5)(2,5). (c) The function ff is decreasing on (2,5)(2,5). (d) The function ff has a constant rate of change on (2,5)(2,5).

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