Using fzero on function

Trying to make a function in Q2 and plotting it in Q2_answer as well as finding the two roots using fzero. I do recive "Not enough input arguments." and I don't understand how to solve this.

function y = Q2(x)
y = x.^6-2.*cos(x);
end

x0 = 2; % initial point
x = linspace(-3,3,100);
plot(x,Q2);
z = fzero(Q2,x0)

Answer 1

[David Hill]

y=@(x)x.^6-2.*cos(x);
x=linspace(-3,3,100);
plot(x,y(x));
z(1)=fzero(y,-1);
z(2)=fzero(y,1);

[Pawel Krenz]

Thank you!