The x-coordinates of the intersection points between the two graphs are? solx and soly

v =[2;0;1;9;0;1;3;0;1]; 
m = max(v); 
n = mean(v);
syms x; 
f= @(x)(3+sin(m*x)+cos(n*x)); 
ezplot(f,[-pi,pi]); 
dfx(x)= diff(f(x));  dfx(x) 

A=2*pi*int(f*sqrt(1+dfx^2),-2*pi,2*pi); 
An = double(A); 

V=pi*int((3+sin(n*x))^2,-2*pi,2*pi); 
Vn=double(V);

[cr]

You question is unclear. You may want to rephrase.