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(1 point) Let f (x) = 7x13/x 7. At what x-values is f ' (x) zero or undefined? x = (If there is more than

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(1 point) Let f (x) = 7x13/x 7. At what x-values is f ' (x) zero or undefined? x = (If there is more than one such x- value, enter a comma-separated list; if there are no such x- values, enter "none".) On what interval(s) is f (x) increasing? f (x) is increasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) On what interval(s) is f (x) decreasing? f (x) is decreasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) (1 point) Let f (x) = (6x _ 9)2/3' At what x-values is f ' (x) zero or undefined? x = (If there is more than one such x- value, enter a comma-separated list; if there are no such x- values, enter "none".) On what interval(s) is f (x) increasing? f (x) is increasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) On what interval(s) is f (x) decreasing? f (x) is decreasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) x2 x2+49' At what x-values is f ' (x) zero or undefined? (1 point) Let f (x) = x = (If there is more than one such x- value, enter a comma-separated list; if there are no such x- values, enter "none".) On what interval(s) is f (x) increasing? f (x) is increasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) On what interval(s) is f (x) decreasing? f (x) is decreasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) x2 1 'tLt =. ( pen) 6 f(X) x2_49 At what x-values is f ' (x) zero or undefined? x = (If there is more than one such x- value, enter a comma-separated list; if there are no such x- values, enter "none".) On what interval(s) is f (x) increasing? f (x) is increasing forx in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) On what interval(s) is f (x) decreasing? f (x) is decreasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) 3x x+2' (1 point) Let f (x) 2 At what x-values is f ' (x) zero or undefined? x = (If there is more than one such x- value, enter a comma-separated list; if there are no such x- values, enter "none".) On what interval(s) is f (x) increasing? f (x) is increasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) On what interval(s) is f (x) decreasing? f (x) is decreasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) (1 point) Let f (x) = x3 27x + 11. At what x-values is f ' (x) zero or undefined? x = (If there is more than one such x- value, enter a comma-separated list; if there are no such x- values, enter "none".) On what interval(s) is f (x) increasing? f (x) is increasing forx in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".) On what interval(s) is f (x) decreasing? f (x) is decreasing for x in (If there is more than one such interval, separate them with "U". If there is no such interval, enter "none".)

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