(A)(1−x)n
(B)(1+x)−n
(C) If x>1, then 1+1x+1x2+...... is
(D) If |x|>1, then 1+2x2+3x4−4x6+...... is
(i)xx+1
(ii)1−nx+n(n+1)2!x2−.......if|x|<1
(iii)1+nx−n(n+1)2!x2+.......if|x|<1
(iv)xx−1
(v)x4(x2+1)2
(vi)x4(x2−1)2
(A) (B) (C) (D)
(a) (i) (iii) (iv) (v)
(b) (ii) (iii) (iv) (v)
(c) (iii) (ii) (iv) (v)
(d) (ii) (iii) (i) (v)