There is a real easy way to draw any curve based on an equation: In Libre Calc or Excel create x values say 0 to 10 in one column and in the second column type the function you want say y=2*x^2 (a parabola) cell A1 type 0 and in cell B1 type in the formula bar =2*(click on cell A1)^2) click A2 and i...