表达式5: "f" Subscript, 24 , Baseline left parenthesis, left parenthesis, 0 , 0 , right parenthesis , right parenthesisf240,0
5
grafica
对学生隐藏该文件夹。
6
z_n
对学生隐藏该文件夹。
9
f_n
对学生隐藏该文件夹。
35
表达式60: "f" Subscript, 24 , Baseline left parenthesis, left parenthesis, 0 , 0 , right parenthesis , left parenthesis, "x" , "y" , right parenthesis , right parenthesis . "x" squared plus "f" Subscript, 24 , Baseline left parenthesis, left parenthesis, 0 , 0 , right parenthesis , left parenthesis, "x" , "y" , right parenthesis , right parenthesis . "y" squared less than or equal to 4f240,0,x,y.x2+f240,0,x,y.y2≤4