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Exam Questions Papers - Engineering

Q1:

(1 2 1)x = (1 0 0)4 Then x is equal to

A 2

B 3

C 5

D does not exist

ANS:B - 3

x2 = 2x + 1 = 16 x2 + 2x - 15 = 0, (x - 3)(x + 5) = 0, x = 3, - 5 Thus x = 3.