Escitalopram is an oral drug that is used for treating depression and generalized anxiety disorder. Chemically, escitalopram is similar to citalopram . Both are in a class of drugs called selective serotonin reuptake inhibitors (SSRIs), a class that also includes fluoxetine , paroxetine and sertraline .
1 A circle is all of the points that are a fixed distance, known as the radius, from a given point, known as the center of the circle. 2  Explore the standard equation of a circle using the applet below (Go here for a larger version).
(Continued from above) The standard form of a circle is (x-h)2 + (y-k)2 = r2, where (h, k) is the center and r is the radius of a circle. Also, when the center of the circle is (0, 0), and the radius is r, then the equation of a circle is x2 + y2 = r2..g. find the center and radius of the circle whose equation is (x - 5)2 + (y - 1)2 = 36. Look a this equation in line with its standard form like: (x-h)2 + (y-k)2 = r2 and you ll we get the result, say-h = 5, k = 1 and r = 36= 6.