This calculator will give you the area bounded by the curve above the x-axis, the gradient the curve and where the __ value of the curve occurs. In elementary algebra, a quadratic equation (from the Latin quadratus for "square") is any equation having the form ax^2+bx+c=0 where x represents an unknown, and a, b, and c are constants with a not equal to 0. If a = 0, then the equation is linear, not quadratic. The parameters  a, b, and c are called, respectively, the quadratic coefficient, the linear coefficient and the constant or free term. Geometric methods were used to solve quadratic equations in Babylonia, Egypt, Greece, China, and India. The Egyptian Berlin Papyrus, dating back to the Middle Kingdom (2050 BC to 1650 BC), contains the solution to a two-term quadratic equation. In the Indian Sulba Sutras, circa 8th century BC, quadratic equations of the form ax2 = c and ax2 + bx = c were explored using geometric methods. Babylonian mathematicians from circa 400 BC and Chin
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