diff ( y2 , x , 3 ) = neg( cos ( x ) ); diff ( y1 , x , 1 ) = neg( y2 ); ! Digits := 32; max_terms := 40; ! x_start := c(0.1); x_end := c(5.0); diff(y1,0,exact_soln_y1(x_start)); diff(y2,0,exact_soln_y2(x_start)); diff(y2,1,exact_soln_y2p(x_start)); diff(y2,2,exact_soln_y2pp(x_start)); glob_look_poles := true; # # Not Given = 0 # Real = 1 # Complex = 2 # No Pole = 3 # Impossible Eq = 4 # glob_type_given_pole := 3; ! exact_soln_y2 := proc(x) return(sin(c(x))); end; exact_soln_y2p := proc(x) return( cos(c(x))); end; exact_soln_y2pp := proc(x) return( neg( sin(c(x)))); end; exact_soln_y1 := proc(x) return( cos(c(x))); end;