[MATLAB基础] matlab 求曲线与x轴的正负面积之和 - MATLAB爱好者论坛-LabFans.com

morrocco · 2010-12-19, 16:54

y=[-61.429,-58.635,-57.02,-54.306,-53.42,-50.796,-49.6,-36.278,35.735,146.684,259.955,332.941,372.657,398.11,387.08,370.301,309.843,242.748,130.381,17.412,-57.716,-80.582,-72.352,-63.972]
x=[0:1:23]

每个y对应个X画的曲线图，然后求在X轴上0—23，曲线所围成的面积，如果光求负的面积或者正的面积又怎么求呢？

2010-12-19, 16:54	#1
morrocco 初级会员注册日期: 2008-09-09 年龄: 39 帖子: 2 声望力: 0	matlab 求曲线与x轴的正负面积之和 y=[-61.429,-58.635,-57.02,-54.306,-53.42,-50.796,-49.6,-36.278,35.735,146.684,259.955,332.941,372.657,398.11,387.08,370.301,309.843,242.748,130.381,17.412,-57.716,-80.582,-72.352,-63.972] x=[0:1:23] 每个y对应个X画的曲线图，然后求在X轴上0—23，曲线所围成的面积，如果光求负的面积或者正的面积又怎么求呢？