[=1+a+a^(2)+......oo,y=1+b+b^(2)+......oo" if "1+],[x+y],[xy]

Let a,b,c be in A.P. and |a|lt1,|b|lt1|c|lt1. if x=1+a+a^(2)+ . . . . oo , y=1+b+b^(2)+ . . . .oo , z=1+c+c^(2)+ . . . oo , then x,y,z are in

x=1+a+a^(2)+.........oo(|a|<1) and y=1+b+b^(2)+......oo(|b|<1 then find the value of 1+ab+a^(2)b^(2)+......oo

Let a,b,c be in A.P. and |a|lt1,|b|lt1|c|lt1.ifx=1+a+a^(2)+ . . . ."to "oo,y=1+b+b^(2)+ . . . ."to "ooand,z=1+c+c^(2)+ . . . "to "oo , then x,y,z are in

Let a,b,c be in A.P. and |a|lt1,|b|lt1|c|lt1.ifx=1+a+a^(2)+ . . . ."to "oo,y=1+b+b^(2)+ . . . ."to "ooand,z=1+c+c^(2)+ . . . "to "oo , then x,y,z are in

Let a,b,c be in A.P. and |a|lt1,|b|lt1|c|lt1.ifx=1+a+a^(2)+ . . . ."to "oo,y=1+b+b^(2)+ . . . ."to "ooand,z=1+c+c^(2)+ . . . "to "oo , then x,y,z are in

If x=1+a+a^(2)+...oo, a lt 1 and y=1+b+b^(2)+...oo, b lt 1, then 1+ab+a^(2)b^(2)+...oo :

"If "x=1+a+a^(2)+...oo,|a|lt1,y=1+b+b^(2)+...oo,|b|lt1,"then prove that ":(xy)/(x+y-1)=1+ab+a^(2)b^(2)+...oo

Let a, b, c be in A.P and |a|le1,|b|le1,|c|le1 . If x=1+a+a^(2)+.... to oo y=1+b+b^(2)+.... to oo z=1+c+c^(2)+.... tends to infinity then x,y,z are in