Expression 8: "y" equals Start sum from "n" equals 0 to "k" , end sum, "x" Superscript, "n" , Baseliney=k∑n=0xn
8
Expression 9: "y" equals Start sum from "n" equals 1 to "k" , end sum, StartFraction, left parenthesis, negative 1 , right parenthesis Superscript, "n" plus 1 , Baseline "x" Superscript, "n" , Baseline Over "n" , EndFractiony=k∑n=1−1n+1xnn
9
Expression 10: "y" equals Start sum from "n" equals 0 to "k" , end sum, StartFraction, "x" Superscript, "n" , Baseline Over "n" ! , EndFractiony=k∑n=0xnn!
10
Expression 11: "y" equals Start sum from "n" equals 0 to "k" , end sum, StartFraction, left parenthesis, negative 1 , right parenthesis Superscript, "n" , Baseline "x" Superscript, 2 "n" plus 1 , Baseline Over left parenthesis, 2 "n" plus 1 , right parenthesis ! , EndFractiony=k∑n=0−1nx2n+12n+1!
11
Expression 12: "y" equals Start sum from "n" equals 0 to "k" , end sum, StartFraction, left parenthesis, negative 1 , right parenthesis Superscript, "n" , Baseline "x" Superscript, 2 "n" , Baseline Over left parenthesis, 2 "n" , right parenthesis ! , EndFractiony=k∑n=0−1nx2n2n!
12
Expression 13: "y" equals Start sum from "n" equals 0 to "k" , end sum, StartFraction, left parenthesis, negative 1 , right parenthesis Superscript, "n" , Baseline "x" Superscript, 2 "n" plus 1 , Baseline Over 2 "n" plus 1 , EndFractiony=k∑n=0−1nx2n+12n+1
