Population growth. The two curves below describe the numbers of people in two countries at time t , in years. a) Find the average rate of changes of each population with respect to time t as t changes from 0 to 4. This is often called the average growth rate. b) If the calculations in part (a) were the only ones made, would we detect the fact that the populations were growing differently? Why or why not? c) Find the average rates of changes of each population as t changes from 0 to 1; from 1 to 2; from 2 to 3; from 3 to 4. For which population does the statement “the population grew consistently at a rate of 125 million per year” convey accurate information? Why?
Population growth. The two curves below describe the numbers of people in two countries at time t , in years. a) Find the average rate of changes of each population with respect to time t as t changes from 0 to 4. This is often called the average growth rate. b) If the calculations in part (a) were the only ones made, would we detect the fact that the populations were growing differently? Why or why not? c) Find the average rates of changes of each population as t changes from 0 to 1; from 1 to 2; from 2 to 3; from 3 to 4. For which population does the statement “the population grew consistently at a rate of 125 million per year” convey accurate information? Why?
Solution Summary: The author calculates the average rate of change of each population with respect to time t, from the two curves which describe the numbers of people in two countries.
2. [-/4 Points]
DETAILS
MY NOTES
SESSCALCET2 7.3.002.
Let S be the solid obtained by rotating the region shown in the figure about the y-axis. (Assume a = 6 and b = 2.)
ASK YOUR TEACHER
0
y = a sin(bx²)
Sketch a typical approximating shell.
y
6
4
2
x
π/b
y
2
1
x
0.5
1.0
1.5
0.2
0.4
0.6
0.8
1.0
-2
-1
-4
The graph of f', the derivative of f, is shown in the graph below. If f(-9) = -5, what is the value of f(-1)?
y
87 19
6
LO
5
4
3
1
Graph of f'
x
-10 -9 -8 -7 -6 -5 -4 -3 -2 -1
1
2
3
4 5
6
7 8 9 10
-1
-2
-3
-4
-5
-6
-7
-8
564%
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