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Ex5.1, 2 Express the given Complex number in the form a + ib: i9 + i19 𝑖^9 + 𝑖^19 = i × 𝑖^8 + i × 𝑖^18 = i × (𝑖2)^4 + i × (𝑖2)^9 Putting i2 = −1 = i × (−1)4 + i × (−1)9 = i × (1) + i × (−1) = i – i = 0 = 0 + i 0

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Davneet Singh

Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo