Ex 4.1, 6 - Chapter 4 Class 11 Complex Numbers

Last updated at August 11, 2026 by

Ex 4.1, 6 - Express in a + ib: (1/5 + i2/5) - (4 + i5/2) - Ex 4.1

 

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Transcript

Ex5.1, 6 Express the given Complex number in the form a + ib: (1/5 "+" ๐‘– 2/5) โˆ’ (4+๐‘– 5/2) (1/5 "+" ๐‘– 2/5) โˆ’ (4+๐‘– 5/2) = 1/5 + i 2/5 โ€“ 4 โ€“ i 5/2 = 1/5 โˆ’ 4 + i 2/5 โˆ’ i 5/2 = (1/5โˆ’"4" ) + ("i" 2/5 " โˆ’ i " 5/2) = ((1 โˆ’ 4 ร— 5)/5) + ๐‘– (( 2 ร— 2 โˆ’ 5 ร— 5)/10) = ((1 โˆ’ 20)/5) + ๐‘–((4 โˆ’ 25)/10) = ((โˆ’19)/5) + ((โˆ’21)/10 ๐‘– )

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