Port-of-Spain, population 50,878 (1990), is the capital of Trinidad and Tobago. The city is located on the Gulf of Paria[?]. It is one of the major shipping hubs of the Caribbean, with exports of agricultural products and asphalt. Bauxite from the Guianas and iron ore from Venezuela are transferred there for overseas shipment.
... term b2 – 4ac is called the discriminant of the quadratic equation, because it discriminates between three qualitatively different cases:
If the ...