If the function is one-to-one, list the inverse function by switching coordinates or inputs and outputs.f = {(6, -9), (8, -8), (6, -7), (4, -6)}
A. f-1 = {(-9, 6), (-8, 8), (-7, 6), (-6, 4)}
B. not one-to-one
C. f-1 = {(-8, -9), (-9, 6), (6, 8), (-8, -7)}
D. f-1 = {(-8, -9), (-6, 6), (6, 6), (-8, -7)}
Answer: A
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A.
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B.
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C.
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D.
?
E.
?b and d
F.
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Use the method of undetermined coefficients to solve the differential equation.y'' + 6y' + 9y = 2e-x
A. y = C1e-3x + C2e3x + 
e-x
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C. y = (C1 + C2x)e-3x + 
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+ 
+ 
+ . . . + 
Leave your answer in fractional form.
A. 
B. 
C. 
D. 
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