Posted by **harry** on Saturday, December 6, 2008 at 6:15pm.

Let B=

0 1

1 0

Find B if it is to the negative one power. (Its supposed to be a matrix, but I dont know how to write the brackets on the computer)

- math -
**harry**, Saturday, December 6, 2008 at 6:22pm
it is supposed to be

0, 1

1, 0

not 01 and 10. sorry

- math -
**Damon**, Saturday, December 6, 2008 at 6:41pm
In other words find the inverse matrix?

0,1

1,0

times

a,b

c,d

equals identity matrix

1,0

0,1

then

c = 1

d = 0

a = 0

b = 1

so

0,1

1,0

In other words, it is its own inverse

here is a link

http://www.mathwords.com/i/inverse_of_a_matrix.htm

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