Identity matrix

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  1. The Identity Matrix
  1. Matrix Operation with the Identity Matrix
    You are given that Identity matrix and Matrix operation with identity matrix. Perform the following matrix operations:
    1. I3A I_3 \cdot A
    2. 2A+4I32A+4I_3
    3. 4B+2I2-4B+2I_2
    4. I2B I_2 \cdot B
    5. 0I4 0 \cdot I_4
  2. Multiplicative Inverses
    Are the following matrices multiplicative inverses of each other?

    1. Identity matrix

    2. Identity matrix

    3. Identity matrix

    4. Identity matrix