How come I can't solve this simple equation?

g=9.81;
x0=-1000;
y0=1;
v0=585;
q=10;
w=12;
e=14;
x=0:100:4029.7;

%From the Projectile Motion Equations, I substituted the t value of the x
%component into the y compnonent function. This way I have a graph of
%height(y) as a function of distance(x). Here are the different artillery angle shot
%functions.

yq=(v0*sin(q))*((x-x0)/(v0*cos(q)))+(1/2)*g*((x-x0)/(v0*cos(q)))^2+y0;

%I receive the error:

Error using  ^ 
Incorrect dimensions for raising a matrix to a power. Check that the matrix is square and the power is
a scalar. To perform elementwise matrix powers, use '.^'.

Error in MacLab2 (line 24)
yq=(v0*sin(q))*((x-x0)/(v0*cos(q)))+(1/2)*g*((x-x0)/(v0*cos(q)))^2+y0;

%How can I write this code for it to function?

Answer 1

[Walter Roberson]

yq=(v0*sin(q))*((x-x0)/(v0*cos(q)))+(1/2)*g*((x-x0)/(v0*cos(q))).^2+y0;

[Maclane Keohane]

You are the man Walter!