What is d/dx [sin 4x]?
d/dx [sin 4x] क्या है?
Show answer and explanation
Correct Answer
D. 4cos 4x
ExplanationStep 1: Identify the concept: trigonometric derivative. Step 2: The derivative of sin u is cos u × u'. Hence the answer is 4cos 4x. 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 4cos 4x है। Step 3: याद रखें: Trig derivative में chain rule न भूलें।