For the function f(1) = 2x-6x +7, find all intervals where the function is increasing: f is increasing on (Give your answer as an interval or a list of intervals, e.g., (-infinity,8] or (1,5),(7,10).) Similarly, find all intervals where the function is decreasing: f is decreasing on (Give your answer as an interval or a list of intervals, e.g., (-infinity,8] or (1,5),(7,10).) Finally, find all critical points in the graph of f(T) critical points: I = (Enter your r-values as a comma-separated list, or none if there are no critical points.)

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