diff ( y , x , 1 ) = arctan (0.1 * x + 0.2 ) ; ! Digits := 32; max_terms := 30; ! x_start := c(-1.0); x_end := c(-0.6) ; # # 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(10.0 * (0.1 * x + 0.2) * arctan(0.1 * x + 0.2) - 5.0 * ln(1.0 +expt((0.1 * x + 0.2) , 2))); return(c(10.0) * (c(0.1) * c(x) + c(0.2)) * arctan(c(0.1) * c(x) + c(0.2))-c(5.0) * ln(c(1.0) + expt((c(0.1) * c(x) + c(0.2)) , c(2)))); end;