JEE MATHEMATICS MCQ: INCREASING & DECREASING

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Application +4 | -1

f\left( x \right) = kx - \sin x

is monotonically increasing, then

View answer and explanation

Correct option: A

k > 1

Option A (

k > 1

) is correct because for the function to be monotonically increasing, its derivative must be greater than 0, implying

k > \cos x

for all x, hence

k > 1

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