Suppose products A and B are made from plastic, steel, and glass, with the number of units of each raw material required for each product given by the table below.
Plastic | Steel | Glass | |
Product A | 3 | 1 | 0.50 |
Product B | 5 | 0.50 | 2 |
Because of transportation costs to the firm's two plants, X and Y, the unit costs for some of the raw materials are different. The table below gives the unit costs for each of the raw materials at the two plants.
Plant X | Plant Y | |
Plastic | 11 | 9 |
Steel | 22 | 27 |
Glass | 15 | 14 |
Using the information just given, find the total cost of producing each of the products at each of the factories.
A)
B)
C)
D)
In: Math
5. Given the function y = q(x) = (x^2)/(x-1)
a. What is the domain of q(x)?
b. What are the vertical asymptotes?
c. What are the horizontal asymptotes?
d. Where is q(x) increasing/decreasing (draw a line and specify by intervals – be sure to include points where q isn’t defined)?
e. Where is q(x) concave up/down ((draw a line and specify by intervals – be sure to include points where q isn’t defined)?
f. Find rel max/min.
g. Find inflection points.
h. Sketch the curve.
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Westside Energy charges its electric customers a base rate of $4.00 per month, plus 12¢ per kilowatt-hour (kWh) for the first 300 kWh used and 3¢ per kWh for all usage over 300 kWh. Suppose a customer uses x kWh of electricity in one month.
(a) Express the monthly cost E as a piecewise defined function of x. (Assume E is measured in dollars.)
E(x) =
A. if 0 ≤ x ≤ 300
B. if 300 < x
C. (b) Graph the function E for 0 ≤ x ≤ 600.
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f(x)=e^x/(x+1)
Find the vertical and horizontal asymptotes using limits. Also, intervals of increase and decrease, local extrema. Finally, find the intervals of concavity and points of inflection.
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find the volume of the region bounded by y=sin(x) and y=x^2 revolved around y=1
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Use the given function, its first derivative, and its second derivative to answer the following:
f(x)=(1/3)x^3 - (1/2)x^2 - 6x + 5
f'(x)= x^2 - x - 6 = (x+2)(x-3)
f''(x)= 2x - 1
a) What are the intervals of increase and the intervals of decrease
b) Identify local min and max points
c) What are the intervals where the function is concave up, concave down and identify the inflection points
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Use a software program or a graphing utility to solve the system of linear equations. (If there is no solution, enter NO SOLUTION. If the system has an infinite number of solutions, set x5 = t and solve for x1, x2, x3, and x4 in terms of t.) x1 − x2 + 2x3 + 2x4 + 6x5 = 16 3x1 − 2x2 + 4x3 + 4x4 + 12x5 = 33 x2 − x3 − x4 − 3x5 = −9 2x1 − 2x2 + 4x3 + 5x4 + 15x5 = 34 2x1 − 2x2 + 4x3 + 4x4 + 13x5 = 34 (x1, x2, x3, x4, x5) =
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S = {(2,5,3)} and T = {(2,0,5)} are two clusters. Two clusters that S and T spans are L(S) and L(T) . Is the intersection of L (S) and L (T) a vector space? If yes, find this vector space. If no, explain why there is no vector space.
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Integral x^5-x^4+4x^3-4x^2+8x-4 / ( x^3+2)^3(x^2-1) dx
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How was symbolism used in the art of the Renaissance Period? Do we use symbolism today in our visual arts? Explain
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Find the absolute max and min of f(x)= e^-x sin(x) on the interval [0, 2pi]
Find the absolute max and min of f(x)= (x^2) / (x^3 +1) when x is greater or equal to 0
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. True or false?
(1) There is at most one pivot in any row.
(2) There is at most one pivot in any column.
(3) There is at least one pivot in any row.
(4) There is at least one pivot in any column.
(5) There cannot be more free variables than pivot variables.
(6) There is a linear system that has exactly two solutions.
(7) The weights c1, ..., cp ? R in a linear combination c1v1 + ... + cpvp cannot all be zero.
(8) Given nonzero vectors u, v in R n , span{u, v} contains the line through u and the origin. Hint: can you describe this line as a set of vectors?
(9) Asking whether the linear system corresponding to a1 a2 a3 b is consistent, is the same as asking whether b is a linear combination of a1, a2, a3.
(10) If the augmented matrix of a linear system has two identical rows, the linear system is necessarily inconsistent
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Suppose a colony of mushrooms triples in size every 10 days. If there are 10 mushrooms to start, how many days until there are 1000 mushrooms? (A) 41.9181 days (B) 56.4091 days (C) 37.9010 days (D) 29.8974 days (E) 49.3955 days
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Write an equation in standard form given slope =-3/4; P(-1,2)
a. 3x+ 4y =5 b. 3x-4y=5 c. 3x-4y=-5 d. 3x+4y =-5
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