Consider the basic $COCOMO$ model where $E$ is the effort applied in person-months, $D$ is the development time in chronological months, $KLOC$ is the estimated number of delivered lines of code (in thousands) and $a_b, b_b, c_b,d_b$ have their usual meanings. The basic $COCOMO$ equations are of the form.
- $E=a_b(KLOC)\; exp(b_b), D=c_b(E)\;exp(d_b)$
- $D=a_b(KLOC)\; exp(b_b), E=c_b(D)\; exp(d_b)$
- $E=a_b\; exp(b_b), D=c_b(KLOC)\; exp(d_b)$
- $E=a_b\; exp(d_b), D=c_b(KLOC) \;exp(b_b)$