MATLAB两题，大神求助

2025-04-14 21:36:13

推荐回答（1个）

回答1：

第一题 matlab 代码面积结果存放在变量 area 中

clear all

x= linspace(-10,10,1000);

y1=x.^2/8;

y2=64./(x.^2+16);

plot(x,y1)

hold on

plot(x,y2)

xlabel('x')

ylabel('y')

title('Question 1')

legend('y1=x^2/8','y2=64/(x^2+16)')

%% calculate area

syms x y

f1=x^2/8-y;

f2=64/(x^2+16)-y;

cro=solve(f1,f2); % calculate intersection points

cro_re=[cro.x(3:4) cro.y(3:4)]; % select real results

f3=x^2/8;

f4=64/(x^2+16);

area=abs(int(f3,cro_re(1,1),cro_re(2,1))-int(f4,cro_re(1,1),cro_re(2,1))); % result

第二题马上跟进