Question

matlab解答在平面上任意画一条简单光滑闭曲线,求此闭曲线围成的平面图形的面积.并观察当曲线上取的点逐渐增加时,所求多

Answer 1

任意画一条简单光滑闭曲线,你得给出表达式,MATLAB 才能编程呀. 分段函数,分为y大于0 和小于0两段,分别画.不分段的函数就更简单了.x1 = -1:0.01:3;y1 = sqrt(abs(4-(x1-1).^2));plot(x1,y1)hold on;x2 = -1:0.01:3;y2 = -sqrt(abs(4-(x-1).^2));plot(x2,y2)axis equal ％％％％％％％％％％％％％％％％％％％％％％％或者用 easy plot：ezplot('(x-1)^2 + y^2 = 4')