A farmer wants to walk at a constant rate from her bam to a straight river, fill her pail, and carry it to her house in the least time. (a) Explain how this problem relates to Fermat’s principle and the light-reflection problem in Exercise 64. (b) Use the result of Exercise 64 to describe geometrically the best path for the farmer to take. (c) Use part (b) to determine where the farmer should fill her pail if her house and bam are located as in Figure Ex-66.
A farmer wants to walk at a constant rate from her bam to a straight river, fill her pail, and carry it to her house in the least time. (a) Explain how this problem relates to Fermat’s principle and the light-reflection problem in Exercise 64. (b) Use the result of Exercise 64 to describe geometrically the best path for the farmer to take. (c) Use part (b) to determine where the farmer should fill her pail if her house and bam are located as in Figure Ex-66.
what is a function that has a domain of all real numbers, lim as x approaches from the right does not exist, and the limit as x appraoches from the left is 8
The conical tank shown here is filled with olive oil weighing 43 lb/ft³. How much
work does it take to pump all of the oil to the rim of the tank?
W =
ft-lb (Round to the nearest whole number as needed.)
10-y
y=2x or x = my
(5,10)
Use any method to evaluate the integral.
363 dw
w² √121-w²
363 dw
w² √ 121-w²
☐
(Type an exact answer, using radicals as needed.)
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