यदि एक सतत यादृच्छिक चर X का वितरण फलन F(x) =  {0 if x1C(x+1)2 if 1<x22 if x>2 है, तो प्रायिकता घनत्व फलन है:

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UPPCL AE Electrical 2 April 2022 Official Paper (Shift 1)
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  1. f(x)={1 is x12C(x+1) if 1<x20 if x>2
  2. f(x)={0 is x12C(x+1) if 1<x20 if x>2
  3. f(x)={0 is x1C(x+1) if 1<x21 if x>2
  4. f(x)={0 is x1C(x+1) if 1<x20 if x>2

Answer (Detailed Solution Below)

Option 2 : f(x)={0 is x12C(x+1) if 1<x20 if x>2
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ST 1: UPPCL AE - Electric Circuits
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Detailed Solution

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अवधारणा:

प्रायिकता घनत्व फलन (pdf) द्वारा दिया गया है:

PDF=f(x) dx=1

प्रायिकता घनत्व फलन और बंटन फलन के बीच संबंध निम्न द्वारा दिया गया है:

f(x)=dF(x)dx

जहाँ, f(x) प्रायिकता घनत्व फलन है

F(x) बंटन फलन है

गणना:

दिया गया है,  F(x) = {0 if x1C(x+1)2 if 1<x22 if x>2

f(x)=1 d(0)dx dx + 12d(C(x+1)2)dx dx + 2 d(2)dx dx 

f(x)=0+122C(x+1) dx +0

f(x)={0 is x12C(x+1) if 1<x20 if x>2

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