Question

Find the inverse matrix of

a+1 1 1 ... 1 1
1 a+1 1 ... 1 1
1 1 a+1 ... 1 1
......................................
1 1 1 ... a+1 1
1 1 1 ... 1 a+1


Sorry I couldnt illustrate it better , I is n00b

Answer 1

You can use the equation part here and put it in an actually matrix form. Or could you draw it? It's hard to understand the illustration above.

Answer 2

So basically is a infinite matrix in the diagonal you have a+1 all the others are 1.

a+1 1 1 ... 1 1
1 a+1 1 ... 1 1
1 1 a+1 ... 1 1
: : : : : :
: : : : : :
1 1 1 ... a+1 1
1 1 1 ... 1 a+1

Answer 3

We can try to find a pattern..

Answer 4

maybe

Answer 5

Ok first if we look at a 2 by 2...
can we find the determinant of this matrix
(you answer yes and then do so :p)