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Find a and b if a + 2b + 2ai = 4 + 6i - Mathematics and Statistics

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Question

Find a and b if a + 2b + 2ai = 4 + 6i

Sum

Solution

a + 2b + 2ai = 4 + 6i

Equating real and imaginary parts, we get

a + 2b = 4 …(i)

2a = 6 …(ii)

∴ a = 3

Substituting, a = 3 in (i), we get

3 + 2b = 4

∴ b = `1/2`

∴ a = 3 and b = `1/2`

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Chapter 1: Complex Numbers - Exercise 1.1 [Page 6]

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