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Q1. (a) Solve the following complex equation for a and b:

7a + 3b + j(4a - 5b) = 15 + j22 (8)

(b) The impedance, z, of an electronic circuit is given by z = 4 + j3 and the current, i, is represented by i = 6 + j5 Determine. in polar form, the voltage. v. across the impedance. given that v = iz  (8)