Use the result of Exercise 18 in these exercises. At 11 A .M . on a certain morning the outside temperature was 76 °F . At 11 P .M . that evening it had dropped to 52 ° F . (a) Show that at some instant during this period the temperature was decreasing at the rate of 2 ° F/h . (b) Suppose that you know the temperature reached a high of 88 ° F sometime between 11 A .M . and 11 P .M . Show that at some instant during this period the temperature was decreasing at a rate greater than 3 ° F/h .
Use the result of Exercise 18 in these exercises. At 11 A .M . on a certain morning the outside temperature was 76 °F . At 11 P .M . that evening it had dropped to 52 ° F . (a) Show that at some instant during this period the temperature was decreasing at the rate of 2 ° F/h . (b) Suppose that you know the temperature reached a high of 88 ° F sometime between 11 A .M . and 11 P .M . Show that at some instant during this period the temperature was decreasing at a rate greater than 3 ° F/h .
At
11
A
.M
.
on a certain morning the outside temperature was
76
°F
. At
11
P
.M
.
that evening it had dropped to
52
°
F
.
(a) Show that at some instant during this period the temperature was decreasing at the rate of
2
°
F/h
.
(b) Suppose that you know the temperature reached a high of
88
°
F
sometime between
11
A
.M
.
and
11
P
.M
.
Show that at some instant during this period the temperature was decreasing at a rate greater than
3
°
F/h
.
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