Very very long equation - is there something wrong?

[saeddawoud]

Very Very Long Equation

Hello,
I am working in some topic as general case in that topic, but while I am deriveing the equations, I noted that these equations have many terms, e.g.: 10 summations and up to 5-6 lines. Is that normal, or there is something wrong?
Regards

 

[matlab1983]

Very Very Long Equation

if all are scalars except two or more its ok