dkornelsen10 dkornelsen10

02-02-2017
Mathematics

contestada

Find the specified vector or scalar.

u = -4i + 1j and v = 4i + 1j; Find .u+v
A. sqrt34

B. 8
C. 5
D. 2

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LammettHash LammettHash

02-02-2017

Since [tex]\mathbf u+\mathbf v=(-4+4)\,\vec i+(1+1)\,\vec j=2\,\vec j[/tex]

so the norm is

[tex]\|\mathbf u+\mathbf v\|=\sqrt{2^2}=2[/tex]

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