View Compilation Error

0_0_37378263_29332\Main.java:9: 错误: 非法转义符
                    System.out.printf("%.4f\%n",f1(100,y));
                                            ^
0_0_37378263_29332\Main.java:13: 错误: 非法转义符
                    System.out.printf("%.4f\%n", as);
                                            ^
2 个错误