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Chapter-Matrices,,exercise-3.2,,question no.-15,,,please provide helpul advise,,

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Chapter-Matrices,,exercise-3.2,,question no.-15,,,please provide helpul advise,,

Posted by Shubham Ranjan 6 years, 4 months ago

CBSE > Class 12 > Mathematics

2 answers

Priya Shyam 6 years, 4 months ago

First take out the value of A^2 i.e A×A by using matrix multiplication then multiply A which is given in question with 5 then subtract A^2-5A ,and at last is I it is a identity matrix and its value is all the diagonal element is 1 and upper&lower triangular elements are 0 then 6 × I and at last add the value of 6I with the value u have got from A^2-5A

Aman Kumar 6 years, 4 months ago

Its easy man.....ohk...listen brother...first of all u take out the matrix separately....first take out A^2, then multiply 5 with A matrix , u will get 5A then take [ I is I(3×3) order]...then multiply by 6 to it.......then apply normal addition subtraction.....u will definitely get the result

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