北京科技大学matlab作业----2-----

1、University of Science and Technology Beijing数学实验报告实验名称MATLAB绘图学 院专业班级计算机1201姓名学号 412550252014年4月【实验目的】1、了解掌握MATIAB基本绘图指令、基本绘图控制参数，掌握坐标轴的控制，了解线条属性，学会使用图形标注，成功绘制出曲线；2、学习绘制MATLAB二维特殊图形；3、了解三维曲线、三维曲面绘图。【实验任务】1、绘制y=ex/3sin(3x) (x 0,4 n )的图像，要求用蓝色的星号画图；并且画出其包络线y= ex的图像，用红色的点划线画图；2、在同一图形窗口化三个子图，要求使用指令gtext

2、、axis legend title、xlabe、和 ylabel：(1) y=xcosx, x (- n , n )(2) y=xtan(1/x)sinx3, x ( n , 4n )(3) y=e1/xsinx, x 1,83、绘制圆锥螺线的图像并加各种标注，圆锥螺线的参数方程为：x=tcos(x /6)t y=tsinn ( n /6)t,(0 t 20 n )z=2t三、【实验程序】1、2、3、三、【实验结果】1、2、3、File Edit View Insert Tools Desktop Window Help已P j沙超毀尿J鳳匡I | 酉四、【实验总结】这次实验主要是学习mat

3、lab软件的绘图功能：二维绘图、三维 绘图； matlab软件还有丰富的图形修饰功能，如改变线条的形式和颜色；除此之 外其还可以以多种形式如在一个图形中显示多个函数图形，一个figure中显示多个坐标系，还有一个程序中就可以用多个figure 一起来表示不同的函数matlab绘制三维图形时功能尤为强大，可以绘制三维线形图、三 维网眼图、三维表面图、三维轮廓图、三维混合图十分直观的反映出 三维图形让我们更加容易对三维图形的理解。总的而言matlab是一款十分有用的绘图软件。实验中遇到的困难就是指令比较多，格式刚刚开始接触 觉得陌生，相信多做练习一定能掌握这个软件的使用要领。clcx1=-pi:2

4、*pi/50:pi;y1=x1.*cos(x1);y2=x.*tan(1./x).*sin(x43);x2=pi:3*pi/50:4*pi;x3=1:8/50:8;y3=exp(1./x).*sin(x);plot(x1,y1,x2,y2,x3,y3),grid on gtext(y=xcosx),gtext(y=xtan(1/x)sin(xA3),gtext(y=eA(1/x)sinx) title(三条曲线)axis autoWhen you are old and grey and full of sleep,And no ddi ng by the fire, take dow n t

5、his book,And slowly read, and dream of the soft lookYour eyes had once, and of their shadows deep;How many loved your mome nts of glad grace,And loved your beauty with love false or true,But one man loved the pilgrim soul in you,And loved the sorrows of your cha nging face;And bending dow n beside t

6、he glow ing bars,Murmur, a little sadly, how love fledAnd paced upon the mountains overheadAnd hid his face amid a crowd of stars.The furthest dista nee in the worldIs not betwee n life and deathBut whe n I sta nd in front of youYet you dont know thatI love you.The furthest dista nee in the worldIs

7、not whe n I sta nd in front of youYet you cant see my loveBut whe n un doubtedly knowing the love from bothYet cannot be together.The furthest dista nee in the worldIs not being apart while being in loveBut whe n I pla inly cannot resist the year ningYet prete nding you have n ever bee n in my heart.The furthest dista nee in the worldIs not strugg