Question
Mathematics Question on matrix transformation
If a˚=ı^+2ȷ^+k,b=3(ı^−ȷ^+k),a˚⋅c=3 and a˚×cˇ=b, then a˚⋅((xb)−b−cˇ)=
A
24
B
38
C
10
D
None of these
Answer
24
Explanation
Solution
Hence, the Correct Option is (A): 24
If a˚=ı^+2ȷ^+k,b=3(ı^−ȷ^+k),a˚⋅c=3 and a˚×cˇ=b, then a˚⋅((xb)−b−cˇ)=
24
38
10
None of these
24
Hence, the Correct Option is (A): 24