At what points is the given function continuous?f(x, y, z) = 
A. All (x, y, z) such that x2 + y2 ? 25
B. All (x, y, z)
C. All (x, y, z) such that x2 + y2 ? 5
D. All (x, y, z) such that x2 + y2 ? 0
Answer: C
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Complete the following: (i) Find the x- and y-intercepts. (ii) Determine the multiplicity of each zero of f. (iii) Graph y = f(x).f(x) = 2(x + 4)(x + 1)2
A. (i) x-ints are -4 and -1; the y-int is 8
(ii) -4 has multiplicity 1,
-1 has multiplicity 2;
(iii)
B. (i) x-ints are -4 and -1; the y-int is 32
(ii) -4 has multiplicity 2,
-1 has multiplicity 1;
(iii)
C. (i) x-ints are 4 and 1; the y-int is -8
(ii) 4 has multiplicity 1,
1 has multiplicity 2;
(iii)
D. (i) x-ints are -4 and 1; the y-int is 8
(ii) -4 has multiplicity 1,
1 has multiplicity 2;
(iii)
Provide an appropriate response.Suppose that A and B are both matrices of dimension r × s. Under what conditions can both the product AB and the product BA be found?
A. If r = s B. If r > 1 C. If r = 1 D. There are no conditions under which both products can be found.
Use the graph to find the vertical asymptotes, if any, of the function.
A. y = -2, y = 2 B. none C. x = 0 D. x = 0, y = 0
Simplify the fraction.
A. 
B. 
C. 
D. 