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Given the vector a=(3,-1), b=(-1,2), then the coordinate of -3a --2b is? Just the results. Thank you.
-3A-2b=(-3*3+-2*-1,-3*-1.-2*2)=(-7,-1)
Vector: Given a·b=0,|a|=2,|b|=3, and (3a+2b)·(λa-b)=0, find λ
0
Given vector a=(2,4), b=(-1,-3), then |3a+2b| is? Given the vector a=(2,4), b=(-1,-3), then |3a+2b|?
0
Given vector a, b satisfies (a+3b)/5-(a-b)/2=1/5(3a+2b) verification a//b
2(A+3b)-5(a-b)=6a+4b, resulting in a=b
Let vector a=(3,5,-4), b=(2,1,8), calculate the cosine value of 2a+3b,3a-2b, a*b and the angle between a and b, and determine the condition that γ,μ should meet, so that γa+μb is perpendicular to the z-axis.
Let vector a=(3,5,-4), b=(2,1,8), calculate the cosine value of 2a+3b,3a-2b, a*b and the angle between a and b, and determine the condition that γ,μ should be satisfied, so that γa b is perpendicular to the z-axis: vector a=(3,5,-4), b=(2,1,8)2a+3b=(2*3+3*2,2*5+1*3,2*(-4)+3*8)=(12,13,16)3a-2b=(...
Given the coordinates of vectors a, b, find the coordinates of a+b, a-b,-3a+2b,4a-3b, a=(3,-2), b Given the coordinates of vectors a, b, find the coordinates of a+b, a-b,-3a+2b,4a-3b 1. A =(3,-2), b =(5,4) 2.A =(4,3), b =(-2,6)
A+b=(8,2) a-b=(-2,-6)-3a+2b=-3(3,-2)+2(5,4)=(-9,6)+(10,8)=(1,14)4a-3b=(12,-8)-(15,12)=(-3,20) a+b=(4,3)+(-2,6)=(2,9) a-b=(4+2,3-6)=(6,-3)-3a+2b=(-12,-9)+(-4,12)=(-16,3)4a-3b=(16,12)-(-6,18)=(22, -6...
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