ch matrices

Asked by nilesh.dhote74 | 5th Apr, 2020, 08:07: PM

Expert Answer:

AB=I
So
B=A-1
Finding A-1
straight A equals open square brackets table row 1 2 row 1 3 end table close square brackets
let
open square brackets table row 1 2 row 1 3 end table close square brackets straight B equals open square brackets table row 1 0 row 0 1 end table close square brackets
straight R subscript 2 rightwards arrow straight R subscript 2 minus straight R subscript 1
open square brackets table row 1 2 row 0 1 end table close square brackets straight B equals open square brackets table row 1 0 row cell negative 1 end cell 1 end table close square brackets
straight R subscript 1 rightwards arrow straight R subscript 1 minus 2 straight R subscript 2
open square brackets table row 1 0 row 0 1 end table close square brackets straight B equals open square brackets table row 3 cell negative 2 end cell row cell negative 1 end cell 1 end table close square brackets
straight B equals open square brackets table row 3 cell negative 2 end cell row cell negative 1 end cell 1 end table close square brackets

Answered by Arun | 6th Apr, 2020, 10:16: AM