Trying to solve system of equations in a for loop. What is happening with my arguments?

I am trying to solve eqs, which is a system of 3 equations and 3 unknowns, for multiple values of the parameter S.

function F=eqs(a)
F(1) = acos(((1-2*a(1))^2+(1-2*a(2))^2 )^(1/2)/(2*a(3)))+acos(a(1)/a(3))+...
    acos(a(2)/a(3))+((1-2*a(1))^2+(1-2*a(2))^2 )^(1/2)/2*((a(3))^2-1/4*...
    ((1-2*a(1))^2+(1-2*a(2))^2 ))^(1/2)/((S-2*(a(3))^2 ) )+(a(1)*...
    ((a(3))^2-(a(1))^2 )^(1/2))/((S-2*(a(3))^2 ) )+(a(2)*((a(3))^2-(a(2))^2 )...
    ^(1/2))/((S-2*(a(3))^2 ) )-pi
F(2) = (4*a(2)*(a(3))^2+a(2)-4*(a(3))^2)/(4*a(2)-4*(a(3))^2-1)-a(1)
F(3) = (1-2*a(2))/((1-2*a(1))^2+(1-2*a(2))^2 )^(1/2) *((a(3))^2-1/4*...
    ((1-2*a(1))^2+(1-2*a(2))^2 ))^(1/2)-((a(3))^2-(a(2))^2 )^(1/2)
end

I need advice. My current version of trying to solve eqs 84 times is to call eqs into a second function eqs2

function g=eqs2(a)
  d=[0.3 0.4 0.5];
  for t=1:84
    S=(t+16)/100
    g(t)=fsolve(eqs,d)
  end
end

The first thing MATLAB tells me is "Error using eqs (line 2) Not enough input arguments," which confuses me because eqs functions properly by itself.

I also may need help on letting eqs share the same set of S parameters as eqs 2 (global parameters? nested functions? I am new to all of it so any advice will help!).

Please help. (Thanks in advance!)

Answer 1

[Walter Roberson]

g(t)=fsolve(@eqs,d)

[Matt]

Fair enough. What does the @ actually do in this case? Thanks for the help! Now all I have to do is figure out how to use the S in multiple functions.

Update: It turns out I had 10,000 other issues but this helped me to eliminate some of them. Thank you much!

[Walter Roberson]

http://www.mathworks.com/help/matlab/matlab_prog/creating-a-function-handle.html