public String toString(){
                String ss = "";
                ss =  ss + this.coeffCopy(0).toString();
                if(this.deg>0)ss = ss + " + (" + this.coeffCopy(1).toString() + ").x";
                for(int i=2; i<=this.deg; i++){
                    ss = ss + " + (" + this.coeffCopy(i).toString() + ").x^" + i;
                }
                return ss;
        }