B. 1 / x
ExplanationStep 1: Identify the concept: this is logarithmic derivative. Step 2: The derivative of natural log x is 1/x. Step 3: Remember log derivative as reciprocal of x.
Step 1: concept पहचानें: यह logarithmic derivative है। Step 2: Natural log यानी log x का derivative 1/x होता है। Step 3: log derivative को reciprocal x से याद रखें।
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