यदि f(x) = log x2, जहाँ x > 1 हो तो f(x) का अवकलज ज्ञात करें।

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Airforce Group X MBT 13-Jul-2021 Shift 3
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  1. 2x2
  2. 1x
  3. 2x
  4. 1x2

Answer (Detailed Solution Below)

Option 3 : 2x
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अवधारणा:

श्रृंखला नियम: ddx[f(g(x))]=f(g(x))g(x)

यदि y = log x हो तो f'(x) = 1/x hai

और यदि y = xn, तो f'(x) = nxn - 1

गणना:

f(x) = log x2, x > 1

x के संबंध में अवकलन करने पर, हमें प्राप्त करते हैं

⇒ f'(x) = (1x2)dx2dx 

⇒ f'(x) = 2xx2

⇒ f'(x) = 2x

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