Solve this Please don't give any link : 4 Using elementary row operations, find - Maths - Matrices

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4   Using   elementary   row   operations ,
  find   the   inverse   of   the  
following   matrix   : A = 2 - 1 3 - 5 3 1 - 3 2
3

Koka Sri Lakshmi Divya Sai · Accepted Answer

Dear Student

Given matrix 2-13-531-323With the augumented matrix2-13-531-323100010001R1→R12⇒1-1232-531-3231200010001Now  eliminate 1st column by using operationsR2→R2+5R1R32→R3+3R1  then we get1-1232012172012152120052103201Now perform  R221-1232011701215212005203201Now eliminate second column by performingR1→R1+12R2R3→R3-12R2⇒1010011700-1310520-1-11Now -R3⇒1010011700131052011-1Now eliminate 3rd column by performingR1→R1-10R3R2→R2-17R3⇒100010001-7-910-12-151711-1∴The inverse of the 2-13-531-323 is  -7-910-12-151711-1

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Solve this Please don't give any link...: 4 . Using elementary row operations , find the inverse of the following matrix : A = 2 - 1 3 - 5 3 1 - 3 2 3

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$4 . Using elementary row operations, find the inverse of the following matrix : A = [\begin{matrix} 2 & - 1 & 3 \\ - 5 & 3 & 1 \\ - 3 & 2 & 3 \end{matrix}]$