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[" 18."(1+x)^(n)<=1+x^(n)" ,where "],[["...

[" 18."(1+x)^(n)<=1+x^(n)" ,where "],[[" (a) "n>1," (b) "0<=n<=1" and "x>0],[" (c) "n>1" and "x>0," (d) "x<0]]

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If ((1 +i)/(1 -i))^(x) =1 , then (A) x=2n+1 (B) x=4n (C) x=2n (D) x=4n+1, n in N.

If ((1 +i)/(1 -i))^(x) =1 , then (A) x=2n+1 (B) x=4n (C) x=2n (D) x=4n+1, n in N.

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(d^n)/(dx^n)(logx)=? (a) ((n-1)!)/(x^n) (b) (n !)/(x^n) (c) ((n-2)!)/(x^n) (d) (-1)^(n-1)((n-1)!)/(x^n)

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