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If x=9^(1//3)xx9^(1//9)xx 9^(1//27)xx….,...

If `x=9^(1//3)xx9^(1//9)xx 9^(1//27)xx….,y=4^(1//3)xx-4^(1//9)xx 4^(1//27)x….,` and `z=underset(r=1)overset(oo)Sigma(1+i)^(r)` then arg (x+yz) is equal to

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If x=9^(1//3)xx9^(1//9)xx 9^(1//27)xx….,y=4^(1//3)xx-4^(1//9)xx 4^(1//27)x…., and z=Sigma_(r=1)^(oo) (1+i)^(r) then arg (x+yz) is equal to

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