Continuity and Differentiability
Oswaal
CBSE
Grade 12
Question:
If $y = \cos^{-1}\left(\dfrac{a + b \cos x}{b + a \cos x}\right)$, prove that $\dfrac{dy}{dx} = \dfrac{\sqrt{b^2 - a^2}}{b + a \cos x}$.
Step-by-Step Solution
Key Concept: Chain rule differentiation with algebraic simplification.
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Correct Answer:
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