For given trip ends and impedance matrix. Compute trip interchanges by the gravity model for

two iterations and verify if the solution has converged.

$10$ marks

Fij

$1$

$2$

$3$

Productions

$1$

$2$

$3$

$0\mathrm{.}45$

$\frac{1\mathrm{.}6}{4}$

$2\mathrm{.}8$

$0\mathrm{.}9$

$5\mathrm{.}3$

$4\mathrm{.}3$

$3$