If you graph a linear function, you get a line. If you graph a quadratic function, you get something called a parabola. A parabola tends to look like a smile or a frown, depending on the function. Check out this tutorial and learn about parabolas!
Green Door Meanings. Green bursts with images of spring, and so green is symbolic of renewal, growth, rejuvenation and transformation. Green is associated with the earth, and can provide grounding energies. Green is also used in holistic healing practices because it promotes physical well-being as well as compassion.
With a subdued neutral house color such as this one, you can get away with pretty much any color you like for the front door or other small accent areas. The jolt of fun color on this door is such a nice touch. 9 Daring Colors for Your Front Door.