
Show transcribed image text Find the intervals on which f(x) 3(14 +z)2 decreases. a) O (-14,-7) U (0, 00) b) (7,00) c) O (-oo,-14) U (7,00 d) (-oo, 00) e) (-00,-14) U (-7,0 Question 9 Find the intervals on which f(x)-32-3 cos(x) increases for 0
Find the intervals on which f(x) 3(14 +z)2 decreases. a) O (-14,-7) U (0, 00) b) (7,00) c) O (-oo,-14) U (7,00 d) (-oo, 00) e) (-00,-14) U (-7,0 Question 9 Find the intervals on which f(x)-32-3 cos(x) increases for 0





