Ex 6.2, 12 (A) - Chapter 6 Class 12 Application of Derivatives (Term 1)
Last updated at Aug. 19, 2021 by Teachoo
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Ex 6.2, 12 (A) You are here
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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)
