用matlab画出函数y=xsin1 x的图像

x=-pi:0.1:pi;x1=-pi:0.01:-5*pi/8;x2=-3*pi/8:0.01:3*pi/8;x3=5*pi/8:0.01:pi;x4=-7*pi/8:0.01:-1*pi/8;x5

nt(p,x,0,1);ezplot(y)______________subs(y)是把你y中的变量用已定义的值进行替代,书宬这里就是把t替换成了数组0:0.2:6,于是得到就是数值型的数组了.plo

y值是个负数,不知道你是想画虚部还是实部functionsolvezhidaoN=15;L=15;d=L/2;k=2*pi/L;x=0:0.01:pi;functiony=fun(x)y=0;forn

clearx=-1:0.01:1;y=(x.^3).*exp(-x.^2);plot(x,y);title('y=x^3*e^(-x^2)');xlabel('x'),ylabel('y')

clear;clc[xy]=meshgrid(-2:0.1:2);forii=1:length(x)forjj=1:length(x)ifx(ii,jj)+y(ii,jj)>1z(ii,jj)=0.5

t=-2*pi:0.1:2*pi;plot(t,cos(2*t).*exp(t),'r-')再问：　问一下，再将这个加上“在图中以函数名作为图形框的标题，并标注出刻度y=0、y为最大值和最小值处的x刻

x=[0:0.01:20*pi]>>y=0.8*sin(x/65);>>plot(x,y);你如果要得到sin（x/65）的三角函数图形你可以用下面语句>>x=[0:0.01:130*pi]>>y=0

clear;clc;x=-2:0.001:2;y=50*(1+x.^4);plot(x,y);

xx=-5:0.1:5;yy=xx;[x,y]=meshgrid(xx,yy);z=x.^2+y.^2+sin(x.*y);subplot(1,2,1)mesh(x,y,z)subplot(1,2,2

ezplot('x^2+y^3+5*x*y-79')

ezplot('y=exp(-x^2/2)/sqrt(2*x)',[0,1,0,10])

syms x yeq=0.2538*tan(y)-y-1472.39*x*y^3;ezplot(eq,[-1 0.1 -0.5 0.5]) 

x=0:0.1:1;y=x*0.5;plot(x,y);

x=0:2.5:100;y=x.*exp(-2*x);plot(y);

[x,y]=meshgrid(-2:0.1:2);>>z=0.5-(sin(x.^2+y.^2)-0.5).^2./(1+(x.^2+y.^2)).^2;>>mesh(x,y,z)也可以还可以这样>>

matlab7中有直接绘制隐函数曲线的命令其调用格式:ezplot(隐函数表达式)如要绘制f(x,y)=0的曲线,命令为:ezplot('f(x,y)')上面的语句将自动选择x,y轴的范围-2*pie

ezplot('-2165*x^2-414.5*x+135.5')再问：再问一下怎么求它的极值点再答：func=inline('-2165*x^2-414.5*x+135.5','x'

clear;clc[xy]=meshgrid(0:2:135,0.4:0.01:1);z=3693+7.5*x+24246*y+0.239*x.^2+13508*y.^2-27*x.*y;mesh(x

k和y的维数不同：k=linspace(0,0.01,1000);后面也要改[xx,yy]=meshgrid(k,y);pp=1.013*10.^(5).*((288.15)./(288.15-k.*

ezplot('17^2-16*abs(x)*y+17*y^2-225')