Euler Stories

The general form is: Ax^2 + Bxy + Cy^2 + Dx + Ey + F = 0 Check the values of A, B, and C: Circle: A = C and B = 0 Ellipse: A ≠ C but same sign, and B = 0 Parabola: Only...

Denis Papin built the first steam engine in 1705 and, by 1800, Boulton and Watt had built 451steam engines. In 1870, the British produced 4 million tons of coke for iro...