Hence we see that this represents an equation of the form .

It can be proven that there exists no equation of the form in which a, b and c are all real coefficients.

This gives us an equation of the form:

The power required follows an equation of the following form:

Suppose one has an equation of the following form:

It follows an equation of the following form:

They can be modeled using equations of the same form.

Any second order ordinary differential equation of the form:

For instance, an equation of the form was solved by finding the side of a square of area A.

All isotropic lines have equations of the following form: