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Complex Numbers — Maths STD 11 Science — Question

Maharashtra BoardEnglish MediumSTD 11 ScienceMathsComplex Numbers2 Marks
Question
Find a and b if :(a – b) + (a + b)i = a + 5i
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Answer

(a – b) + (a + b)i = a + 5i Equating real and imaginary parts, we get a – b = a ……(i) a + b = 5 ……(ii) From (i), b = 0 Substituting b = 0 in (ii), we get a + 0 = 5 ∴ a = 5 ∴ a = 5 and b = 0

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