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Find a Cartesian equation for the curve and identify it.

This problem aims to find the cartesian equation for the curve and after that identify the curve. To better understand the problem, you should be familiar with cartesian coordinate systems, polar coordinates, and conversion from polar to cartesian coordinates. A two-dimensional coordinate system in which a point on a plane is determined by a distance […]

How many square feet is Rhode island?

The aim of this question is to learn unit conversions between different customary units in use in the United States of America. Rhode Island is the smallest state out of all the states within mainland of the United States of America. Its area is 776,960 acres. Although the international unit of area is square meters, there […]

Find the point(s) on the surface at which the tangent plane is horizontal.

$ z = xy +dfrac { 1 } { x } +dfrac{1}{y}$ This article aims to find the point on the surface at which the tangent plane is horizontal. This article uses the concept of the surface at which the tangent plane is horizontal. To answer these questions, we must realize that the horizontal plane is tangent to the […]