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If 1,omega,omega^2 are the cube roots of...

If `1,omega,omega^2` are the cube roots of unity, then `/_\`

is equal to.....

Text Solution

Verified by Experts

`Delta=1(omega^(3n)-1)+omega^(n)(omega^(2n)-omega^(2n))+omega^(2n)(omega^(n)-omega^(4n))`
`Delta=[(omega^(3))^(n)-1]+0+omega^(2n)[omega^(n)-(omega^(3))^(n)*omega^(n)]`
`Delta=1-1+0+omega^(2n)[omega^(n)-omega^(n)]=0`.
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VMC MODULES ENGLISH-JEE MAIN REVISION TEST - 29 (2020)-MATHEMATICS
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  8. Solution of (sin x)(dy)/(dx) = y ln y , given y ((pi)/2) = e

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  14. Variance of 1st 10 natural nos. is m & mean of first 10 odd natural nu...

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  15. Find the expected value of the experiment “tossing 3 coins simultaneou...

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  18. If 1,omega,omega^2 are the cube roots of unity, then /\ is equal...

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  19. If four numbers. in decreasing A.P, a, b, c, d have their sum as 20 & ...

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  20. If g(x)=x^3+x-2 and g(f(x))=x^3+3x^2+4x then f(1)+f(2) is equal to

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