TASK11第五章习题
习题解答1234567
习题
解答
1
程序
x=-4:0.1:4;
>> y=sin(x).^2./(1+x.^2);
>> plot(x,y)
图像
2
程序
function paowuxian(theta)
x=0:50:1200;
t=theta/180*pi;
y=x*tan(t)-9.8/(2*(100*cos(t))^2)*x.^2;
plot(x,y)
hold on;grid on
>> paowuxian(30)
>> paowuxian(45)
>> paowuxian(75)
3
>> x=0:0.1:2*pi;
>> r=-cos(2*x).*sec(x);
>> polar(x,r)
>> figure
>> x1=r.*cos(x);y1=r.*sin(x);
>> plot(x1,y1)
4
程序（m文件）
theta=0:pi/10:pi*4;
x=1.5*sin(theta)+sin(1.5*theta);
y=1.5*cos(theta)-cos(1.5*theta);
plot(x,y)
5
>> a=magic(5)
a =
17 24 1 8 15
23 5 7 14 16
4 6 13 20 22
10 12 19 21 3
11 18 25 2 9
>> bar(a)
6
>> a=[2200 1500 600 200 300 700 ];
>> [max,i]=max(a)
max =
2200
i =
1
>> b=zeros(size(a));
>> b(i)=1;
>> pie(a,b)
7
%huapinglititu
theta1=-pi/2:pi/24:pi/2;
theta2=0:pi/12:pi/3;
r1=0.5+cos(theta1);
r2=0.5+0.8*sin(theta2);
r=[r1,0.5,0.5,r2];
cylinder(r)
