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Q.

If α,β  are the roots of the quadratic equation ax2+bx+c=0  then which of the following expression will be the symmetric function of roots

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a

4(log1α)2+(logβ)2 

b

  1. |logαβ| 

c

3tan(αβ) 

d

α2β5+β2α5 

answer is Ü.

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Detailed Solution

Symmetric functions are those which do not change by interchanging αandβ.

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