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Question : 35 of 160
Marks:
+1,
-0
Solution:
r=λ|| ,,;2,3,−4;3,−1,1|=λ(−−14−11‌) |
‌‌r⋅(−3+4)=5 ⇒‌‌λ(−−14−11‌)(3−3+4)=5 ⇒‌‌λ(−3+42−44)=5 ⇒‌‌λ=−1 ‌‌|r|=|λ|√1+196+121=√318
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