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(1) If f(x) = - tanยบ r + sec? r, then find f' 6). 1212 1-02
2. Let f(x) = xยฎ In(x). Then f"(1) is (a) 7, (b) 5, (c) 9, (d) 3, (e) 2.
16. Let f(x) = 235. Then f'(3) is (a) โ 13/196, (b) โ 11/98, (c) -2/7, (d) 5/196, (e).โ1/49.
