Class 12 Continuity And Differentiability · Assertion Reason1 Marksassertion_reason
Class 12 Maths · Continuity And Differentiability · Assertion Reason #30
Assertion: If y=sin x, then y‴(0)=−1.
Reason: The product rule is (fg)′=fg′+gf′.
✅ Step-by-Step Solution
Final Answer: Option (B): Both A and R are true, but R does not correctly explain A.
- Successive derivatives are cos x,−sin x,−cos x, giving −1 at 0. The product rule is true but does not explain these single-function derivatives.
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