why is my code not working?

v=[2;0;1;9;0;1;3;0;1];

m=max(v);

n=mean(v);

f=@(x) m-(1/2)*x;

g=@(x) 2*x^2-n;

figure

ezplot(f);

hold on

ezplot(g);

hold on

syms x y

eqns=y==m-(1/2)*x;y=2*x^2-n;

[solx, soly]=solve(eqns,[x y]);

plot(solx(1),soly(1),'b-x',solx(2),soly(2),'b-x')

expr1=m-(1/2)*x;

expr2=2*x^2-n;

I1=int(expr1,[solx(1) solx(2)]);

I2=int(expr2,[solx(1) solx(2)]);

I=I2-I1;

fprintf('The area bounded by the two curves is: %f\n',I);

Answer 1

[Stephan]

v=[2;0;1;9;0;1;3;0;1];
m=max(v);
n=mean(v); 
f=@(x) m-(1/2).*x;  % Vectorized
g=@(x) 2.*x.^2-n;   % Vectorized
figure
ezplot(f);
hold on
ezplot(g);
hold on
syms x y
eqns=[y==m-(1/2)*x;y==2*x^2-n];  % Array and y==2 instead of y=2 in equation 2
[solx, soly]=solve(eqns,[x y]);
plot(solx(1),soly(1),'b-x',solx(2),soly(2),'b-x')

expr1=m-(1/2)*x;
expr2=2*x^2-n;
I1=int(expr1,[solx(1) solx(2)]);
I2=int(expr2,[solx(1) solx(2)]);
I=I2-I1;
fprintf('The area bounded by the two curves is: %f\n',I);

The area bounded by the two curves is: 34.022481

[Anjoud Alkathairi]

Thank you so much