UPSC NDA I 2022 Mathematics Solved Paper

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Question : 76 of 120

Marks: +1, -0

In which one of the following intervals is the function f(x)=‌

x3

3

−‌

7x2

2

+6x+5 decreasing ?

[NDA-I 2022]

(−∞,1) only
(1,6)
(6,∞) only
(−∞,1)∪(6,∞)

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