What is d/dx [ln(3x+1)]?
d/dx [ln(3x+1)] क्या है?
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Correct Answer
D. 3 / (3x+1)
ExplanationStep 1: Identify the concept: logarithmic derivative. Step 2: The derivative of ln u is u'/u. Here u'=3, so the answer is 3/(3x+1). Step 3: Exam tip: In log derivative, numerator is the inner derivative.
Step 1: अवधारणा logarithmic derivative है। Step 2: ln u का derivative u'/u है। यहाँ u'=3, इसलिए answer 3/(3x+1)। Step 3: याद रखें: ln derivative में numerator inner derivative होता है।