How dealing the instruction solve with a loop

Good morning to everybody.

I posted a question yesterday and I figured out how to fix the errors in my code. As usual sorry for my english and for my bad skills in Matlab but I am quite new at it.

I am writing you again to ask for another help regarding the use of the instruction "solve" to find the solutions of 2 equations contening parameters that are not fixed but change values according to the loop at the beginning of my code. More into details this is the code I am using:

load data_4d;

for j=1:5

    for i=1:6

        k=data_4d{1,j}{1,i}.frame;

wristx(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,10);

wristxv=wristx(i,j,k);

wristy(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,11);

wristyv=wristy(i,j,k);

wristz(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,12);

wristzv=wristz(i,j,k);

objupx(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,76);

objupy(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,77);

objupz(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,78);

objdownx(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,79);

objdowny(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,80);

objdownz(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,81);

objcenterx(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,82);

objcentery(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,83);

objcenterz(i,j,k)=data_4d{1,j}{1,i}.marker_positions(k,84);

cx(i,j,k)=(objupx(i,j,k)+objdownx(i,j,k))./2;

cxv=cx(i,j,k);

cy(i,j,k)=(objupy(i,j,k)+objdowny(i,j,k))./2;

cyv=cy(i,j,k);

cz(i,j,k)=(objupz(i,j,k)+objdownz(i,j,k))./2;

czv=cz(i,j,k);

m(i,j,k)=(cy(i,j,k)-wristy(i,j,k))./(cx(i,j,k)-wristx(i,j,k));ù mv=m(i,j,k);

[x,y]=solve('(x-cxv)^2+(y-cyv)^2=20^2','(y-cyv)-mv*(x-cxv)=0');

    end
end

The solutions I got are: x =

 (cxv*mv + 20*mv*(1/(mv^2 + 1))^(1/2))/mv

 (cxv*mv - 20*mv*(1/(mv^2 + 1))^(1/2))/mv

and y=

 cyv + 20*mv*(1/(mv^2 + 1))^(1/2)

 cyv - 20*mv*(1/(mv^2 + 1))^(1/2)

The problem is that I used support variables to allow the instruction "solve2 to work.

My definitive question is:How can I have numerical solutions for the different values of the indeces?

I kindly thank everyone who is giving me a help.

Best Regards