give a big-o estimate for each of these functions. for the function g in your estimate f(x) is o(g(x)), use a simple function g of smallest order. a) (n3 n2 log n)(log n 1) (17 log n 19)(n3 2) b) (2n n2)(n3 3n) c) (nn n2n 5n)(n! 5n)