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\u8981\u770b\u51fd\u6570\u7684\u5b9a\u4e49\u57df\uff0c\u5982\u679c\u5b9a\u4e49\u57df\u4e0d\u5305\u542bx=0\uff0cf\uff080\uff09\u4e5f\u5c31\u65e0\u4ece\u8bf4\u8d77\u4e86

\u5982\u56fe