Expert Math Class 12 Level 3

What is d/dx [sin 3x]?

d/dx [sin 3x] क्या है?

Show answer and explanation
Correct Answer

B. 3cos 3x

Explanation

Step 1: Identify the concept: trigonometric derivative. Step 2: The derivative of sin u is cos u × u'. Hence the answer is 3cos 3x. Step 3: Exam tip: Do not forget the chain rule in trigonometric derivatives.

Step 1: अवधारणा trigonometric derivative है। Step 2: sin u का derivative cos u × u' होता है। इसलिए answer 3cos 3x है। Step 3: याद रखें: Trig derivative में chain rule न भूलें।

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