Does the given matrix, A, have an inverse? If so, What is A^-1
A= [-7 -25]
[2 7]
This is a square matrice, so it must have an inverse right?

So if I multiply this by -1 it's [7 25]
[-2 -7]?

Question

Does the given matrix, A, have an inverse? If so, What is A^-1
A= [-7   -25]
      [2    7]
This is a square matrice, so it must have an inverse right? 

So if I multiply this by -1 it's [7   25]
                                               [-2   -7]?

hartnn · Answer

Its not necessary that every square matrix has an inverse!

If the determinant of that matrix is NOT 0, onlt then it has an inverse.

so can you find the determinant of A ?

anonymous · Answer

The determinant of a 2x2 is a*d - b*c? But there is only 1 so. . .I dun know now. x3

anonymous · Answer

This is a singular matrix?

hartnn · Answer

there is only 1 what ?
|dw:1413383381867:dw|