B. 2x
ExplanationStep 1: Identify the concept: this is differentiation power rule. Step 2: d/dx x^n = n x^(n-1) so d/dx x^2 = 2x. Step 3: Bring the power down and reduce the power by one.
Step 1: concept पहचानें: यह differentiation power rule है। Step 2: d/dx x^n = n x^(n-1) इसलिए d/dx x^2 = 2x। Step 3: Power को नीचे लाकर power एक कम करें।
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