C and D are inverses of one another. Find the elements of the product. e1 = e2 = e3 = e4 = What value of x makes the two matrices inverses of one another?

e1 = e2 = e3 = e4 =
1
⇒ 0
0
a11 = a12 = a21 = a22 =
-1
a11 = a12 = a21 = a22 =
-1.5
a11 = a12 = a21 = a22 =
2
a= b= c= d= e= f= g= h= i=
-2.5
a= b= c= d= e= f= g= h= i=
3.5
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