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Evaluate: |{:(" "a+ib,c+id),(-c+id,a-ib)...

Evaluate: `|{:(" "a+ib,c+id),(-c+id,a-ib):}|`

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Here, `A = |[a+ib,c+id],[-c+id,a-ib]|`
`=>A = [(a+ib)(a-ib) - (-c+id)(c+id)]`
`=>A = [a^2-i^2b^2-(i^2d^2 - c^2)]`
As `i^2 =-1`,
`:. A = a^2+b^2+c^2+d^2`
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XII BOARD PREVIOUS YEAR PAPER ENGLISH-BOARD PAPER SOLUTIONS-All Questions
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  3. Evaluate: |{:(" "a+ib,c+id),(-c+id,a-ib):}|

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  14. Write the adjoint of the following matrix: [[2,-1],[4,3]]

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  17. If f\ : R-> R be defined by f(x)=(3-x^3)^(1//3)\ , then find fof(x)

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  18. Write the principal value of sec^(-1)(-2)

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  19. What positive value of x makes the following pair of determinants equa...

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