Question
Download Solution PDF(a + b + c) = 19 மற்றும் (a2 + b2 + c2) = 155 எனில் (a - b)2 + (b - c)2 + (c - a)2 இன் மதிப்பை கண்டறிக.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFவிடை :
(a + b + c) = 19
(a2 + b2 + c2) = 155
பயன்படுத்தப்பட்டுள்ள சூத்திரம்:
a2 + b2 + c2 - (ab + bc + ca) = (1/2) × [(a - b)2 + (b - c)2 + (c - a)2]
கணக்கீடு:
a + b + c = 19
⇒ (a + b + c)2 = (19)2
⇒ a2 + b2 + c2 + 2 × (ab + bc + ca) = 361
⇒ 155 + 2 × (ab + bc + ca) = 361
⇒ 2 × (ab + bc + ca) = (361 - 155)
⇒ (ab + bc + ca) = 206/2 = 103
எனவே ,
a2 + b2 + c2 - (ab + bc + ca) = (1/2) × [(a - b)2 + (b - c)2 + (c - a)2]
⇒ 2 × (155 - 103) = (a - b)2 + (b - c)2 + (c - a)2
⇒ (a - b)2 + (b - c)2 + (c - a)2 = 104
∴ எனவே சரியான விடை 104.
Last updated on Jul 21, 2025
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