Expression 3: "a" equals left bracket, 1 , ... , "N" , right bracketa=1,...,N
equals=
11
22
33
44
55
66
3
Expression 4: "g" left parenthesis, "x" , "n" , right parenthesis equals left parenthesis, negative 1 , right parenthesis Superscript, "n" , Baseline left parenthesis, StartFraction, 2 left parenthesis, 6 minus "n" squared pi squared , right parenthesis Over "n" cubed pi cubed , EndFraction sin left parenthesis, "n" pi "x" , right parenthesis , right parenthesisgx,n=−1n26−n2π2n3π3sinnπx
4
Expression 5: "g" left parenthesis, "x" , "a" , right parenthesisgx,a
5
Expression 6: Start sum from "n" equals 1 to "N" , end sum, "g" left parenthesis, "x" , "n" , right parenthesisN∑n=1gx,n