Expression 2: left parenthesis, "e" Superscript, left parenthesis, negative left parenthesis, "x" minus "k" , right parenthesis squared , right parenthesis , Baseline , right parenthesis minus left parenthesis, "e" Superscript, left parenthesis, negative left parenthesis, negative "x" minus "k" , right parenthesis squared , right parenthesis , Baseline , right parenthesis Has graph. To audio trace, press ALT+T.e−x−k2−e−−x−k2
2
Expression 3: 2 left parenthesis, "e" Superscript, left parenthesis, negative left parenthesis, "x" minus "k" , right parenthesis squared , right parenthesis , Baseline , right parenthesis Has graph. To audio trace, press ALT+T.2e−x−k2