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Construct a2 × 2 matrix where aij = ij(i-2j)22 - Mathematics

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Question

Construct a2 × 2 matrix where aij = `("i" - 2"j")^2/2`

Sum

Solution

Let A = `[("a"_11, "a"_12),("a"_21, "a"_22)]_(2 xx 2)`

Given that aij = `("i" - 2"j")^2/2`

a11 = `(1 - 2 xx 1)^2/2 = 1/2`

a12 = `(1 - 2 xx 2)^2/2 = 9/2`

a21 = `(2 - 2 xx 1)^2/2` = 0

a22 = `(2 - 2 xx 2)^2/2` = 2

Hence, the matrix A = `[(1/2, 9/2),(0, 2)]`

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Chapter 3: Matrices - Exercise [Page 53]

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NCERT Exemplar Mathematics [English] Class 12
Chapter 3 Matrices
Exercise | Q 3. (i) | Page 53

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