enter x &n and display sum of following series x1 +x2 +x3+- - - - - - - -+xn(1,2,3,-----,n are powers of x)
Use this formula... sum = a |(r^(n-1) -1 )| /|(r-1)| where a = first term r = second term/ first term ( Tn/T(n-1) )
