diff ( y , x , 1 ) = arctan ( x ) ; ! Digits := 32; max_terms := 30; ! x_start := c(-2.0); x_end := c(2.0) ; # # Trouble further # diff(y,0,exact_soln_y(x_start)); glob_look_poles := true; # # Not Given = 0 # Real = 1 # Complex = 2 # No Pole = 3 # Impossible Eq = 4 # glob_type_given_pole := 0; ! exact_soln_y := proc(x) return(c(x)*arctan(c(x))-c(0.5)*ln(c(x)*c(x)+c(1.0))); end;