matlab绘制函数 f(x)=1 根号下x 用fplot-搜答案-智慧作业帮

x=[-5:0.02:5];y=x;y(x

x=-5:0.01:5;%定义自变量x的区间.y=x^2+x-1;%定义因变量y的区间.plot(x,y,'-r','LineWidth',2)%用宽度为2的红色实线画图.gridon%显示坐标网格.

[x,y]=meshgrid(-10:0.5:10);z=x-y;z(z<0)=nan;surf(x,y,z)zlabel('z')ylabel('y')xlab

你没有对y逐个赋值,要先把同长度的y预定义出来,再根据判断逐个赋值x=0:0.1:10;y=x;fori=1:length(x)ifx(i)再问：那如果是0

程序：f=-5:0.001:5;y=1./sqrt(1+(2*pi*f).^2);plot(f,y)xlabel('f')ylabel('y')title('y

x=-4:0.1:4;y=(x=1).*(exp(-(x-1).^2));plot(x,y,'--g')text(-2,5,'\leftarrowy=x^2','FontSize',9)text(2,

functionfunc_baidu_56568133x=-200:200;y=(x0).*(x.^2+(1-x).^(1/4)-5);figure(1);plot(x,y)fh=@func_baid

k是数组,不能那样比较；逻辑与是&&；j最后应该是一个数组,不是一个数；修改如下：forx=30:1:350if0.015*x>=0.1&&0.015*x=0.35&&0.015*x=1.75&&0.

symsxyty=50*cos(t)-40*cos(t+7.5*(1-cos(3.1415926*t/55))-0.25*(1-cos(2*3.1415926*t/55))+36.86);x=50*s

y=sym('(x^3-7*x+exp(x))/(x^3-x)');ezplot(y,[-4,4])z=sym('4/(1+x^2+y^2)');figure,ezplot(z)

F=@(x,y)exp((1/(5*sqrt(2*pi)))*exp(-(y-100).^2/50));z=@(a,b)quadl(@(x)arrayfun(@(x)quadl(@(y)F(x,y),

clc,cleari=0;whilei

ezplot('y=x^2+x-1')

x=10*ones(1,100);y=rand(1,100);plot(x,y,'r-');

ezplot('x+1/x')matlab无法显示坐标轴（或者说他的坐标轴就是显示在左侧和底部的刻度）x=1:0.01:100;plot(x,x+1/x);本身就错了,少了个点x=1:0.01:100

缺几个乘号.ezplot('-sin(x/2)^4-4*sin(x/2)^2+sin(x/2)^3*sqrt(sin(x/2)^2+4)+sin(x/2)*sqrt(sin(x/2)^2+4)

d=0:0.001:12;x=d/2000;y=-2.64*10^(-18).*(1./(x.^2+2.*x)+1./(x.^2+2.*x+1)+2.*(log(x.^2+2.*x)-log(x.^2

x=0:0.01:1y=x*exp(-1)plot(x,y)

命令：y=0:0.001:1;f(1,:)=3*y.*log(y)-1/30*exp(-(30*y-30/exp(1)).^4);f(2,:)=2.5*y.*log(y)-1/30*exp(-(30*

x=0:0.01:10;y=(1+x).^(1./x);plot(x,y)