Moment diagram code error when using .^2

So i started making shear and moment diagram of uniform distributed load. Watched Youtube and followed some steps however i ended up with problems on moment. Please help

formula on shear -- working

V=Ra*(x>0)-UDL*(x-0).*(x>0)+UDL*(x-4).*(x>4)-cl1*(x>4)-UDL*(x-4).*(x>4)+UDL*(x-12).*(x>12)+Rc*(x>12)-UDL*(x-12).*(x>12)+UDL*(x-18).*(x>18)-cl2*(x==18);

formula on moment --not working (still not complete yet coz im still working on it.

M=-(UDL/2)*(x-0).^2*(x>0) + (UDL/2)*(x-4).^2*(x>4);

[Jan]

How can we help you? The information that you have seen something on YouTube and that you want to implement a "formula on moment" is not sufficient to explain, what "not working" means.

Answer 1

[John D'Errico]

You SAID that you understand the need for the .* and .^ operators. Then we see this:

M=-(UDL/2)*(x-0).^2*(x>0) + (UDL/2)*(x-4).^2*(x>4);
                   _                        _ 

And it seems you forgot what you said? The problem is not in the use of .^ but in the use of a different incorrect operator.

What else can I say? :)