Given that A (1,2), B (3,2), vector a=(x+3, x-3y-4) is equal to vector AB, then the value of real number x is

Given that A (1,2), B (3,2), vector a=(x+3, x-3y-4) is equal to vector AB, then the value of real number x is

According to the subject,
Vector AB = Vector OB - Vector OA =(3-1,2-2)=(2,0)
And because vector a and vector AB are equal
Then there are equations.
2= X +3
X-3y-4=0
Concurrently, x=-1, y=-5/3

Let vector a=(x,-3), b=(-1,1) If |a-b|=5, then the value of real number x is Let vector a=(x,-3), b=(-1,1) if |a-b|=5, then the value of real number x is

This is a simple vector operation problem. You only need to master the simplest basic knowledge
A-b=(x,-3)-b (-1,1)=(x+1,-4)
|A-b|=[ the square of (x+1) plus the square of -4 and then the square of ]=5
The square of X +2X -8=0 gives X =-4 or X =2.

This is a simple vector operation problem. You only need to master the simplest basic knowledge
A-b=(x,-3)-b (-1,1)=(x+1,-4)
|A-b|=[ the square of (x+1) plus the square of -4 and then the square of ]=5
The square of X+2X-8=0, and the solution X=-4 or X=2.

Given vectors a =(1,2), b =(2, x), if ab =1, then the value of the real number x is

A=(1,2), b=(2, x), ab=1
2+2X=1
X=-1/2

Given plane vector A =(2m+1,3), B =(2, m), and A∥ B, the value of the real number m equals ______. Given plane vector A =(2m+1,3), B =(2, m), and A∥ B, then the value of the real number m ______.

Plane vector

A =(2m+1,3),

B =(2, m), and

A∥

B,
(2M+1,3)=λ(2, m)=(2λ,λm),
2M+1=2λ,3=λm. The solution is m=-2 or 3
2.
Therefore, the answer is:3
2 Or −2.

Known vector A =(m-2, m+3), B=(2m+1, m-2), and A vs. If the angle of b is obtuse, the value range of real number m is ______. Known vector A =(m-2, m+3), B=(2m+1, m-2), and A and If the angle of b is obtuse, the value range of real number m is ______.

If the angle between two vectors is obtuse, then the quantity product is negative and the two vectors are not reversed (m-2)(2m+1)+(m+3)(m-2)<0⇒-43< m <2; when a and b are reversed, there is λ<0 such that (m-2, m+3)=λ(2m+1, m-2)⇒ m−2=λ(2m+1) m+3=λ(m−2)⇒ m=−11±552. m=...

Given plane vector A =(2m+1,3), B =(2, m), and A∥ B, the value of the real number m equals ______. Given plane vector A =(2m+1,3), B =(2, m), and A∥ B, then the value of the real number m ______.

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