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  4. If x3-y3=3 x y(x-y), then log (x-y)3=

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Q. If $x^3-y^3=3 x y(x-y)$, then $\log (x-y)^3=$

Logarithms

Solution:

(i) Apply $\log$ on both the sides
(ii) $x^3-y^3=3 x y(x-y) \Rightarrow(x-y)^3=0$.