The figure below shows the graphs of f and g, where a is a positive real number. Identify the open interval(s) on which the given conditions hold for the graphs of f and g. (Enter your answers using interval notation. If an answer does not exist, enter DNE.) g(x) = e-ar f(x) = eax (a) f is increasing f is decreasing g is increasing g is decreasing (b) f is concave upward f is concave downward g is concave upward

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