5. (a) Suppose that f(h) = O((2h)^p) for some p > 0 as h -> 0. Show that f(h) = O(h^p). (b) Suppose that f(h) = O(h^p) and g(h) = O(h^p) for some p > 0 as h -> 0. Show that f(h) +/- g(h) = O(h^p). (c) Show that if f(h) = O(h^p) for some p > 0 as h -> 0, then hf(h) = O(h^(p+1)).
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