Use the improved Euler's method to obtain a four-decimal approximation of the indicated value. First use h = 0.1 and then use h = 0.05. y' = y - y, y(0) = 0.4; y(0.5) X (h = 0.1) X (h = 0.05) y(0.5) = 0.5234 y(0.5) 0.5234