CHAPTER 10. DERIVATIVES OF MULTIVARIABLE FUNCTIONS 96 Activity 10.7.6 Let f(x, y) = -3y²-4x+6y with triangular domain R whose vertices are at (0,0), (4,0), and (0,4). The domain R and a graph of f on the domain appear in Figure 10.7.3. 3- 2- 1- 2 I -5- -10- -15- -20- Figure 10.7.3 The domain of f(x,y)=²-3y²-4x+6y and its graph. a. Find all of the critical points of f in R. b. parametrize the horizontal leg of the triangular domain, and find the crit- ical points of f on that leg. (Hint: You may need to consider endpoints.)

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CHAPTER 10. DERIVATIVES OF MULTIVARIABLE FUNCTIONS 96
Activity 10.7.6 Let f(x, y) = -3y²-4x+6y with triangular domain R
whose vertices are at (0,0), (4,0), and (0,4). The domain R and a graph of f
on the domain appear in Figure 10.7.3.
3-
2-
1
2
3
--5-
-10-
-15-
-20-
Figure 10.7.3 The domain of f(x, y) = 1²-3y²-4z + 6y and its graph.
a. Find all of the critical points of f in R
b. parametrize the horizontal leg of the triangular domain, and find the crit-
ical points of f on that leg. (Hint: You may need to consider endpoints.)
Transcribed Image Text:CHAPTER 10. DERIVATIVES OF MULTIVARIABLE FUNCTIONS 96 Activity 10.7.6 Let f(x, y) = -3y²-4x+6y with triangular domain R whose vertices are at (0,0), (4,0), and (0,4). The domain R and a graph of f on the domain appear in Figure 10.7.3. 3- 2- 1 2 3 --5- -10- -15- -20- Figure 10.7.3 The domain of f(x, y) = 1²-3y²-4z + 6y and its graph. a. Find all of the critical points of f in R b. parametrize the horizontal leg of the triangular domain, and find the crit- ical points of f on that leg. (Hint: You may need to consider endpoints.)
CHAPTER 10. DE
c. parametrize the vertical leg of the triangular domain, and find the critical
points of f on that leg. (Hint: You may need to consider endpoints.)
d. parametrize the hypotenuse of the triangular domain, and find the crit-
ical points of f on the hypotenuse. (Hint: You may need to consider
endpoints.)
e. Find the absolute maximum and absolute minimum values of f on R.
Transcribed Image Text:CHAPTER 10. DE c. parametrize the vertical leg of the triangular domain, and find the critical points of f on that leg. (Hint: You may need to consider endpoints.) d. parametrize the hypotenuse of the triangular domain, and find the crit- ical points of f on the hypotenuse. (Hint: You may need to consider endpoints.) e. Find the absolute maximum and absolute minimum values of f on R.
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