Ex 4.1, 6 - Chapter 4 Class 11 Complex Numbers

Last updated at August 17, 2026 by

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

 

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Ex5.1, 6 Express the given Complex number in the form a + ib: (1/5 "+" 𝑖 2/5) − (4+𝑖 5/2) (1/5 "+" 𝑖 2/5) − (4+𝑖 5/2) = 1/5 + i 2/5 – 4 – i 5/2 = 1/5 − 4 + i 2/5 − i 5/2 = (1/5−"4" ) + ("i" 2/5 " − i " 5/2) = ((1 − 4 × 5)/5) + 𝑖 (( 2 × 2 − 5 × 5)/10) = ((1 − 20)/5) + 𝑖((4 − 25)/10) = ((−19)/5) + ((−21)/10 𝑖 )

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