`Sigma_(n=1)^(oo) (x^(2n))/(2n-1)` is equal to

sum_(n=1)^(oo) (1)/(2n(2n+1)) is equal to

The vlaue of the Sigma_(n=0)^(oo) (2n+3)/(3^n) is equal to ______.

The value of the Sigma_(n=0)^(oo) (2n+3)/(3^n) is equal to ______.

The vlaue of the Sigma_(n=0)^(oo) (2n+3)/(3^n) is equal to ______.

The sum of series Sigma_(n=1)^(oo) (2n)/(2n+1)! is

If a = Sigma_(n=1)^(oo) (2n)/(2n-1!),b=Sigma__(n=1)^(oo) (2n)/(2n+1!) then ab equals

Let a=Sigma_(n=0)^(oo) (x^(3n))/((3n))!, b =Sigma_(n=1)^(oo) (x^(3n-2))/(3n-2)! and C=Sigma_(n=1)^(oo) (x^(3n-1))/(3n-1)! and w be a complex cube root of unity Statement 1: a+b+c =e^(x),a+bw+cw^(2)=e^(wx) and a+bw^(2)+cw=e^(w^(2)) Statement 2: a^(3)+b^(3)+C^(3)-3abc=1

Let a=Sigma_(n=0)^(oo) (x^(3n))/((3n))!, b =Sigma_(n=1)^(oo) (x^(3n-2))/(3n-2)! and C=Sigma_(n=1)^(oo) (x^(3n-1))/(3n-1)! and w be a complex cube root of unity Statement 1: a+b+c =e^(x),a+bw+cw^(2)=e^(wx) and a+bw^(2)+cw=e^(w^(2)) Statement 2: a^(3)+b^(3)+C^(3)-3abc=1