It is quite possible that the equation we get does not involve the unknown.

This results in a single equation involving only the variable .

And that equation involved a cost of life.

A linear equation can involve more than two variables.

Besides the only way you can show a field of force on paper is with an equation involving arbitrary symbols.

So do the equations involved, I assure you.

Many equations involving exponentials can be solved using the W function.

Most water hammer software packages use the method of characteristics to solve the differential equations involved.

Mr. Drennan used a computer model with 250 equations involving 53 industries.

Physical equations involving isotropic materials must therefore be independent of the coordinate system chosen to represent them.