实验四-求积分\fuhuaqiuji1.m .............\mtrap.m .............\qiuji1.m .............\qiuji1fuhuatixin.m .............\qiuji2.m .............\qiuji2fuhutixin.m .............\qiuji3fuhuasimpson.m .............\qiuji4fuhuasimpson.m 实验四-求积分