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[4] QUESTION 2 (14) 2.1. Solve for x and y in the equation (1 +D(2- y) = x + 4 2.2. Use De Moivres Theorem to determine 3-4p

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2 (1+j) *(2-yj) 2-yj + 2j-yje (2+4) + (2-y); 2+y= nt 45 n+uj = ntuj f 2-4=4 N=0 y= 2-4 Ly = -2 222 Now (3-4jj² (44s 30°) (10(3-4jj2 4 4s 300 TO CAST2 whose pelar form is Whert 5 (3-46) is a complex number r(cosot i slne), o is the angle in I Jut qua3.1.1 We know that (n) meam Eniti Efi We multiply each ni by its frequency and them ald and divide sum 1847-6 60 30-79 Averag

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