Let M and m respectively denote the maximum and the minimum values of [f(\theta)]^2 where f (θ) = \sqrt{a^2cos^2\theta} + \sqrt{a^2 \sin^2 \theta + b^2cos^2\theta}. Then M - m =

AP EAMCET Engineering 20 Apr 2019 Shift 1 Paper

Section: Mathematics

Question : 20 of 160

Marks: +1, -0

Let M and m respectively denote the maximum and the minimum values of [f(θ)]2 where f (θ) = √a2cos2θ + √a2sin2θ+b2cos2θ. Then M - m =

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