運算式 22: "h" equals "a" hyperbolic cosine left parenthesis, arcsinh left parenthesis, "f" Subscript, "s" 2 , Baseline , right parenthesis , right parenthesis plus "y" Subscript, 0 , Baselineh=acosharcsinhfs2+y0
22
運算式 23: "f" left parenthesis, "x" , right parenthesis equals "a" hyperbolic cosine left parenthesis, StartFraction, "x" minus "x" Subscript, 0 , Baseline Over "a" , EndFraction , right parenthesis plus "y" Subscript, 0 , Baseline left brace, "x" Subscript, "S" , Baseline less than or equal to "x" less than or equal to "x" Subscript, 2 , Baseline , right bracefx=acoshx−x0a+y0xS≤x≤x2
