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Question

Find a if ∣ ∣i2i13ii3213i∣ ∣ = ai, where i=1

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Solution

Given that
∣ ∣i2i13ii3213i∣ ∣=ai

Expanding given Determinant
i(i46)+2i(3i2+2)1(9ii3)

=i56i6i3+4i+9i+i3

=i6i+6i+4i+9ii

=11i

Henece value of a=11

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