運算式 3: "f" left parenthesis, "x" , right parenthesis equals left brace, negative 4 less than or equal to "x" less than or equal to negative 3 : negative StartRoot, 1 minus left parenthesis, "x" plus 4 , right parenthesis squared , EndRoot , negative 3 less than or equal to "x" less than or equal to 0 : StartRoot, 9 minus "x" squared , EndRoot , 0 less than or equal to "x" less than or equal to 3 : negative 2 "x" plus 3 , right bracefx=−4≤x≤−3:−1−x+42,−3≤x≤0:9−x2,0≤x≤3:−2x+3
3
"x" Subscript, 1 , Baselinex1
"f" left parenthesis, "x" Subscript, 1 , Baseline , right parenthesisfx1
