If a is nonsingular, then (at )-1 =(a-1) t . (a) verify this theorem for 2 × 2 matrices

Verified

Step-by-step explanation:

Let the 2x2 matrix A be in the form of:

Where det(A) = ad - bc # 0 so A is nonsingular:

Then the transposed version of A is

Then the inverted version of transposed A is

The inverted version of A is:

The transposed version of inverted A is:

We can see that

So this theorem is true for 2 x 2 matrices

i you goofed up when writing this, because hnot is not a word minusf is not either. i cannot answer   because of that.

step-by-step explanation:

y-y1=4(x-x1)

step-by-step explanation:

this is point-slope form since you only have 4 as the slope it goes in place of m

hope this : )