Expression 4: StartFraction, left parenthesis, "x" squared minus 1 , right parenthesis Over 4 "x" , EndFraction left brace, 1 less than or equal to "x" less than or equal to "a" , right bracex2−14x1≤x≤a
4
(2)a=1のときのSの最大値 left parenthesis, StartFraction, left parenthesis, StartRoot, 7 , EndRoot minus 2 , right parenthesis Over 3 , EndFraction , "g" left parenthesis, StartFraction, left parenthesis, StartRoot, 7 , EndRoot minus 2 , right parenthesis Over 3 , EndFraction , right parenthesis , right parenthesis equals left parenthesis, 0.2 1 5 2 5 0 4 3 7 0 2 2 , 0.0 2 1 3 9 9 8 8 8 5 7 9 9 , right parenthesis Has graph. To audio trace, press ALT+T.7−23,g7−23
Expression 6: "g" left parenthesis, "x" , right parenthesis equals StartFraction, "x" left parenthesis, 1 minus "x" , right parenthesis cubed Over 4 left parenthesis, 1 plus "x" , right parenthesis , EndFractiongx=x1−x341+x