Page 339 - Calculus Demystified

326
2 Final Exam
(c)
97
2
(d)
81
1
(e)
81
60. The value of log (1/16) − log (1/27) is
3
2
(a) 2
(b) 3
(c) 4
(d) 1
(e) −1
log 27
61. The value of 2 is
log 3
2
(a) −1
(b) 2
(c) 0
(d) 3
(e) −3
2
62. The graph of y = ln[1/x ], x = 0, is
(a) concave up for all x = 0
(b) concave down for all x = 0
(c) concave up for x< 0 and concave down for x> 0
(d) concave down for x< 0 and concave up for x> 0
(e) never concave up nor concave down
63. The graph of y = e −1/x 2 , |x| > 2, is

(a) concave up
(b) concave down
(c) concave up for x< 0 and concave down for x> 0
(d) concave down for x< 0 and concave up for x> 0
(e) never concave up nor concave down
d
64. The derivative log (cos x) equals
3
dx
sin x cos x
(a)
ln 3
ln 3 · sin x
(b) −
cos x