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sanket kothawade Grade: 11
        magnitude of vector 2a+3b if a= i+j-2k and b=2i-j+k
6 years ago

Answers : (2)

vikas askiitian expert
510 Points
										

2a+3b = 2(i + j - 2k) + 3(2 i- j + k)


          =5i - j - k


magnitude = (52 + 12+12)1/2 = (27)1/2 units

6 years ago
Aniket Patra
48 Points
										

The vector sum comes out to be 8i-j-k.So magnitude is nearly 8.12.

6 years ago
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