diff ( y , x , 1 ) = arcsin ( x ) ; ! max_terms := 30; Digits := 32; ! x_start := -0.8; x_end := 0.8 ; diff(y,0,exact_soln_y(x_start)); glob_h := 0.00001 ; glob_look_poles := true; glob_max_iter := 100; ! exact_soln_y := proc(x) 2.0 + x*arcsin(x)+sqrt(1.0-x*x); end;