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**Multiplication of Matrices:**

Two matrices can be multiplied only when the number of columns in the first is equal to the number of rows in the second. Such matrices are said to be **conformable **for multiplication.

**Notes: **

- Commutative law does not necessarily hold for matrices.
- Matrix multiplication is associative.
- Matrix multiplication is distributive with respect to addition.
- If A is a square matrix of order n and if I
_{n}is an identity matrix of order n, then AI_{n}=I_{n}A=A.

If I be a unit matrix, then I = I^{2} = I^{3} = …… = I^{n}.

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CBSE Class 12 Maths Matrices All Topic Notes CBSE Class 12 Maths All Chapters Notes

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