Question

3 Vectors,

A
,
B
, and
C
are described as follows:
A
=2
x
^
+3
y
^
​

B
=−4
x
^
+2
y
^
​

C
=1
x
^
−7
y
^
​

​
Find the magnitude and direction of the resultant vector
R
=
A
+
B
+
C

Answer 1

Explanation:

An identity is an equation which is always true, no matter what values are substituted. 2 x + 3 x = 5 x is an identity because 2 x + 3 x will always equal regardless of the value of . Identities can be written with the sign ≡, so the example could be written as 2 x + 3 x ≡ 5 x .