Matrices C and D are shown below
What values of a and b will make the equation CD=I true?
a)a=0.5 , b=0.1
b)a=0.1 , b=0.5
c)a=-0.5 , b=-0.1
Matrices C and D are shown below
What values of a and b will make the equation CD=I true?
a)a=0.5 , b=0.1
b)a=0.1 , b=0.5
c)a=-0.5 , b=-0.1
Step 1
The given matrices are,
Step 2
Now multiply the matrices C and D as shown below.
Step 3
Now equate the matrix CD to the identity matrix I and obtain the values of a and b as follows.
CD=I
Two matrices are equal , only if the corresponding elements are equal.
and
Step 4
Therefore, the CD = I is true for a = 0.5 and b =0.1.
Answer is given below (on video)
To calculate:
To convert the radical expression