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Suppose that the temperature z over the plane is given by z = f(x,y), where f(x, y) = x2y - y3.
a. Show that the only critical point is at (0,0).
Use the factorization f(x,y) = y (x2 - y2) to conclude that this point is a saddle point.
b. Now suppose that we are restricted to the unit disc x2 + y2
1. Find the points on the boundary where f attains its absolute max and min. What is the absolute max and min of f?
during the first part of a trip, a canoeist travels 83 miles at a certain speed. the canoeist travels 25 miles on the second part of the trip at a speed of 5 mph slower. the total time for the trip is 3 hrs. What was the speed on each part of the ..
Compute the orientation of X intersect Z in the following examples by exhibiting positively oriented bases at every point. [By convention, we orient the three coordinate axes so that the standard basis vectors are positively oriented. Orient the xy p..
Find the condition that the curve y = mx + c to be a tangent to the parabola y^2 = 4 ax and also determine the point of contact.
Problem: Use the order of operations to simplify the expression.
in a card game a 2-card hand consisting of an ace and either a face card of diamond or a 10 is called a win. if a
Sung rented a truck for one day. There was a base fee of $16.95 , and there was an additional charge of 89 cents for each mile driven. Sung had to pay $151.34 when he returned the truck. For how many miles did he drive the truck?
Which of the following formulas correctly solves for the other base
Select two samples of 20 values from the data in Data Set IV in Appendix D. Test the hypothesis that the mean heights of the buildings are equal.
A quiz cosists of 10 multiple-choice questions, each with 4 possible answers. For someone who makes random guesses for all of the answers, find the probability of passing if the minimum passing grade is 60 %.
A poster is to have an area of 230 in2 with 2 inch margins at the bottom and sides and a 3 inch margin at the top. What dimensions will give the largest printed area?
A machine produces widgets at a defective rate of 10%. A sample of 5 widgets is taken, What is the probability that less than 2 of them are defective?
Job opportunities for physician's assistants are expected to increase from 58,000 in 2000 to 89,000 in 2010. What is the percent of increase.
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