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).
The standard form of the equation of a circle is Standard Form of a Circle (x-h) 2 + (y-k) 2 = r 2 (h,k) = Center and r = Radius We can find the equation of a circle given the center and the radius or given the center and a point on the circle.Letâs look at a couple of examples.he standard form of the equation of a circle is Standard Form of a Circle (x-h) 2 + (y-k) 2 = r 2 (h,k) = Center and r = Radius We can find the equation of a circle given the center and the radius or given the center and a point on the circle. Letâs look at a couple of examples.