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प्रश्न
Select the correct answer from the given alternative:
If, f(x) = `x^50/50 + x^49/49 + x^48/48 + .... +x^2/2 + x + 1`, thef f'(1) =
विकल्प
48
49
50
51
उत्तर
50
Explanation;
f'(x) = x49 + x48 + x47 + .... + x + 1
∴ f'(1) = 1 + 1 + 1 + ... 50 times = 50
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