A vector with a length of 1 unit is called a vector.

A vector with a length of 1 unit is called a vector.

Normal vector

What or what is the size of a vector called a vector?

Module of vector, absolute value of vector, length of vector
See how you understand.

Given the length of vector a =4 the length of vector b =2= pi/2 find out what vector a times vector b equals

If it's a point multiplication, it's 0.
(The two vectors are perpendicular to each other) and (the product of the two vectors is zero) are necessary and sufficient conditions
It is proved that vector a. vector b = the product of the length of two vectors multiplied by cosπ/2=0
If it's a cross-multiplication, you get a vector, depending on the vector

Known A =3 I+2 J- K, B= I- J+2 K, then 5 A and 3 B is equal to ___.

A =3

I+2

J-

K =(3,2,-1),5

A =(15,10,-5)


B=

I-

J+2

K =(1,-1,2),3

B =(3,-3,6)
5

A•3

B=15×3+10×(-3)+(-5)×6=-15
Therefore, the answer is:-15

What is the vector a=3i+2j-k, b=3i+j+2k, a·i=?

Solution: a.i=3i.i+2j.i-k.i
=3+0+0
=3

Let a be the vector a=3i+2j-k, b=i-j+2k.

Is i, j, k an orthogonal basis? If so, the result is -1