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Question : 32 of 160
Marks:
+1,
-0
Solution:
The orthogonal projection of
a on
b is
x=‌b And the orthogonal projection of
b on
a is
y=‌a ∴‌‌x−y=a⋅b(‌−‌) ∵‌‌a=+2−2 and
b=2−−2 ∴‌‌a−b=−+3 and
a⋅b=2−2+4=4 and
|a|2=9=|b|2 So,
|x−y|=‌√10
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