# Ex 6.2, 12 (A) - Chapter 6 Class 12 Application of Derivatives (Term 1)

Last updated at Aug. 19, 2021 by Teachoo

Last updated at Aug. 19, 2021 by Teachoo

Transcript

Ex 6.2, 12 Which of the following functions are strictly decreasing on (0 ,π/2)? (A) cos π₯f(π₯) = cos π₯ fβ(π) = β sin π Since, sin π₯ > 0 for π₯ β (0 , π/2) So, βsin π < 0 for π₯ β (0 , π/2) β΄ fβ(π₯) < 0 for π₯ β (0 , π/2) So, f is strictly decreasing in (0 , π/2)

Ex 6.2

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Ex 6.2, 6 (a)

Ex 6.2, 6 (b) Important

Ex 6.2, 6 (c) Important

Ex 6.2, 6 (d)

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Ex 6.2, 12 (A) You are here

Ex 6.2, 12 (B) Important

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Ex 6.2, 12 (D)

Ex 6.2, 13 (MCQ) Important

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Ex 6.2,19 (MCQ) Important

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