Please help find the solutions for part A, B, and C

The productivity of a country is given by f(x.y) = 100x0 63,0.37 where x is the amount of labor and y is the amount of capital. (a) Compute the marginal productivities of labor and capital when x = 300 and y = 100. (b) Use part (a) to determine the approximate effect on productivity of increasing capital from 100 to 100.5 units, while keeping labor fixed at 300 units. (c) What would be the approximate effect of decreasing labor from 300 to 298 units while keeping capital fixed ut 100 units? (a) The marginal productivity of labor is (Do not round until the final answer. Then round to two decimal places as needed.)