Expression 2: "f" left parenthesis, "x" , right parenthesis equals StartFraction, 1 Over "a" StartRoot, left parenthesis, 2 pi , right parenthesis , EndRoot , EndFraction "e" Superscript, negative 0.5 left parenthesis, StartFraction, left parenthesis, "x" minus "b" , right parenthesis Over "a" , EndFraction , right parenthesis squared , Baselinefx=1a2πe−0.5x−ba2