Use graphical methods to find values of x and y satisfying the given conditions. Find the value of the maximum or minimum.Find x ? 0 and y ? 0 such thatx + 2y ? 10 3x + y ? 10 and z = 2x + 4y is minimized.
A. Minimum of 0 when x = 0 and y = 0
B. Minimum of 20 when x = 2 and y = 4, as well as when x = 10 and y = 0, and all points in between
C. Minimum of 20 when x = 2 and y = 4
D. Minimum of 20 when x = 10 and y = 0
Answer: B
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Find all the second order partial derivatives of the given function.f(x, y) = 
A. 
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B. 
= - 
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C. 
= 
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D. 
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Ohm's Law for the current I in a circuit with voltage E, resistance R, capacitance reactance XC, and inductive reactance XLis 
Use this law to solve the problem.Find E if 
R = 3, XL= 8, and XC= 4.
A. 25i B. -57i C. 57i D. -25i
Assume that the expressions given are denominators of fractions. Find the least common denominator. x2 - 5x + 6, x2 - 8x + 12
A. (x + 3)(x + 2)(x - 6) B. (x - 3)(x - 2)(x - 6) C. (x - 2)(x - 6) D. (x - 3)(x - 2)
Use the shape of the graph to name the function.
A. Identity function B. Standard cubic function C. Constant function D. Absolute value function