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Inverse of a Matrix by Elementary Operation

May 24, 2018

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Relation between Normal Matrix and Identity Matrix

Video Lecture We know that any number remains the same when multiplied by 1. e.g. : Similarly, any matrix remains the same when multiplied by the identity matrix. e.g. : ; where , A is a matrix I is a identity matrix Note : Identity matrix is a square matrix whose diagonal element is 1 and remaining element are zero's . e.g. : ...

Matrix as a Sum of Symmetric Matrix and Skew-Symmetric Matrix

Video Lecture Every square matrix is uniquely expressible as the sum of a Symmetric matrix and a Skew- Symmetric matrix . Let A = P + Q , where P is Symmetric and Q is Skew-Symmetric. ∴ A ' = ( P + Q ) ' = P ' + Q ' = P + ( - Q ) = P - Q . solving , we get ∴ Representation of A as the sum

Linear Equation by Cramer's Rule

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Inverse of a Matrix by Elementary Operation

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