\fSolve the following initial value problem. dy dx 2 -X, X > 0; y(6) = 5 X The solution is (Type an equation.)Using rectangles whose height is given by the value of the function at the midpoint of the rectangle's base, estimate the area under the graph using first two and then four rectangles. f(x) = x between x = 0 and x = 2 . . . Using two rectangles to estimate, the area under f(x) is approximately (Type an integer or a simplified fraction.)\fFind the norm of the partition P = { - 0.8, 0.7, 1.5, 1.8, 3, 4.3}. |PII = (Type an integer or a decimal.)