Misc 12 - |1 - i|x = 2x, find non integral solutions - Miscellaneous - Miscellaneous

part 2 - Misc 12 - Miscellaneous - Serial order wise - Chapter 4 Class 11 Complex Numbers

 

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Misc, 18 Find the number of non-zero integral solutions of the equation |1 – š‘–|š‘„ = 2š‘„ . We need to find the value of x which should be an integer but not 0 Lets first find the value of |1 – š‘–| 1 – š‘– Complex number is of the form x + iy Where š‘„ = 1 š‘¦ = āˆ’1 |1 – š‘–| = √(š‘„^2+š‘¦2) = √((1)2+(āˆ’1)2) = √(1+1) = √2 Hence, |1 – š‘–| = √2 Given |1 – š‘–|š‘„ = 2š‘„ Putting |1 – š‘–| = √2 (√2)š‘„ = 2š‘„ (√2)š‘„ = (√2 Ɨ √2)š‘„ (√2)š‘„ = (√2)^(2 Ɨ š‘„) (√2)š‘„ = ć€–āˆš2怗^( 2š‘„) Comparing Powers š‘„ = 2š‘„ š‘„ āˆ’2š‘„ = 0 āˆ’ š‘„ = 0 š‘„ = 0 Hence, There is no non-zero integral solution

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