1. CARTESIAN COMPLEX NUMBERS - Weebly
COMPLEX NUMBER – E2 1. CARTESIAN COMPLEX NUMBERS 1.1 INTRODUCTION Try to solve this quadratic equation : x2 +2x+5 =0 By using quadratic formula : the discriminant , ∆=b2 −4ac =(2)2 −4(1)(5) =−16 the solution : 2(1) −(2)± −16 x = but it is not possible to evaluate −1 however if an operator j is defined as
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