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Class 12 Continuity And Differentiability · Mcq Single Correct1 Markschain_and_product_rules

Class 12 Maths · Continuity And Differentiability · Mcq Single Correct #24

For y=(cos x−sin x)/(cos x+sin x), find y′ where cos x+sin x≠0.

✅ Step-by-Step Solution

Final Answer: Option (A): −sec²(π/4−x)
  1. The quotient equals tan(π/4−x) on its domain. Its derivative is −sec²(π/4−x).

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