Simplify. Express in terms of i.
A. -4i
B. 4i
C. -i
D. ±4
Answer: B
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Find f-1(x) for the following one-to-one function f.f = {(0, 0), (1, 1), (2, 2), (3, 3)}
A. f-1 = {(0, 0), (-1, 1), (-2, 2), (-3, 3)} B. f-1 = {(0, 0), (1, 1), (2, 2), (3, 3)} C. f-1 = {(0, 0), (1, -1), (2, -2), (3, -3)} D. f-1 = {(0, 0), (-1, -1), (-2, -2), (-3, -3)}
Provide an appropriate response.Which of the following statements are true?I: 2v1 + 2v2 - 3v3 is an affine combination of the 3 vectors.II: The affine hull of two distinct points is a plane.III: If S = {x}, then aff S = {x}. IV: If a set of vectors in ?n is linearly independent, then every vector in ?n can be written as an affine combination of these vectors.
A. I and III B. I , III, and IV C. I and II D. II and IV
Solve the equation.log1/9
= x
A. 
B. 
C. 
D. 
Find an for the given geometric sequence.a1 = 2, r = -2
A. an = -2(2)n-1 B. an = 2(-2)n C. an = 2(-2)n-1 D. an = -2(2)n