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Multiplication of complex numbers:
Example 1:
Combine the subsequent complex numbers:
(4 + 3i) + (8 - 2i) - (7 + 3i) =
Solution:
(4 + 3i) + (8 - 2i) - (7 + 3i) = (4 + 8 - 7) + (3 - 2 - 3)i
= 5 - 2i
Example 2:
Multiply the subsequent complex numbers: (3 + 5i)(6 - 2i)=
(3 + 5i)(6 - 2i) = 18 + 30i - 6i - 10i2
= 18 + 24i - 10(-1)
= 28 + 24i
If arg (a/b) = pi/2, then find the value of ((a+b)/(a-b)) where a,b are complex numbers. Ans) Arg (a/b) =Pi/2 Tan-1 (a/b)= Pi/2 A/B = tanP/2 ,therefore a/b=infinity.
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