C. 9x⁸ / 9x⁸
ExplanationStep 1: Use power rule d/dx x^n = nx^(n-1). Step 2: Derivative of x⁹ is 9x⁸. Step 3: Bring power as coefficient and reduce power by one.
Step 1: Power rule d/dx x^n = nx^(n-1) लगाएं। Step 2: x⁹ का derivative 9x⁸ है। Step 3: Power को coefficient बनाकर power एक घटाएं।
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