Expression 2: "f" left parenthesis, "x" , right parenthesis equals StartRoot, 1 minus left parenthesis, StartAbsoluteValue, "x" , EndAbsoluteValue minus 1 , right parenthesis squared , EndRootfx=1−x−12
2
Expression 3: "g" left parenthesis, "x" , right parenthesis equals arc cosine left parenthesis, 1 minus StartAbsoluteValue, "x" , EndAbsoluteValue , right parenthesis minus pigx=arccos1−x−π