if `a=sumx^n ,b=sumy^n ,c=sum(xy)^n` where `|x|,|y|<1` then

If a=sum x^(n),b=sum y^(n),c=sum(xy)^(n) where |x|,|y|<1 then

if a=sum x^(n),b=sum x^(n),c=sum(xy)^(n)

if x=sum a^(n),y=sum b^(n),z=sum c^(n) where a,b,c are in AP then x,y,z are in

If a=sum_(n=0)^(oo)x^(n),b=sum_(n=0)^(oo)y^(n),c=sum_(n=0)^(oo)(xy)^(n) where |x|,|y|<1 then

If a=sum_(n=0)^(oo)x^(n),b=sum_(n=0)^(oo)y^(n),c=sum_(n=0)^(oo)(xy)^(n) where |x|,|y|<1 then

If x=sum_(n=0)^oo a^n, y=sum_(n=0)^oo b^n where |a|<1,|b|<1 then prove that sum_(n=0)^oo (ab)^n=(xy)/(x+y-1)

If x=sum_(n=0)^oo a^n, y=sum_(n=0)^oo b^n, z=sum_(n=0)^oo c^n where a,b,c are in A.P and |a|<1, |b<1, |c|<1, then x,y,z are in

If n = 5,sumx = sumy = 20, sumx^2 = sumy^2 = 90 , sumxy = 76 Find the regression equation of x on y.

If a = Sigma_(n=0)^(oo) x^(n), b = Sigma_(n=0)^(oo) y^(n), c = Sigma__(n=0)^(oo) (xy)^(n) " Where " |x|, |y| lt 1 , then -

If a = Sigma_(n=0)^(oo) x^(n), b = Sigma_(n=0)^(oo) y^(n), c = Sigma__(n=0)^(oo) (xy)^(n) " Where " |x|, |y| lt 1 , then -