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Last updated at May 29, 2018 by Teachoo
Transcript
Ex5.1, 6 Express the given Complex number in the form a + ib: (1/5 "+" ๐ 2/5) โ (4+๐ 5/2) (1/5 "+" ๐ 2/5) โ (4+๐ 5/2) = 1/5 + i 2/5 โ 4 โ i 5/2 = 1/5 โ 4 + i 2/5 โ i 5/2 = (1/5โ"4" ) + ("i" 2/5 " โ i " 5/2) = ((1 โ 4 ร 5)/5) + ๐ (( 2 ร 2 โ 5 ร 5)/10) = ((1 โ 20)/5) + ๐((4 โ 25)/10) = ((โ19)/5) + ((โ21)/10 ๐ )
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