Find the transform of the given function of s.F  = 

A. f  = e5t 
B. f  = e-5t 
C. f  = e-5t 
D. f  = e-4t 


Answer: B

Mathematics

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A. 0, , ?, 
B.
C. , ?, , 2?
D. , 2?

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The function f is one-to-one. Find its inverse.f(x) = 

A. f-1(x) = (x - 7)2
B. f-1(x) = x2 - 7, x ? 0
C. f-1(x) = x2 + 7, x ? 0

D. f-1(x) = 

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Solve the equation f(x) = 0 analytically and then use the graph of y = f(x) to solve the inequalities f(x) < 0 and f(x) = 3(4x) - 48

A. {2}; (-?, 2); [2, ?) B. {-2}; (-?, -2); [-2, ?) C. {2}; [2, ?); (-?, 2) D. {2}; (-?, 2]; (2, ?)

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Use a half-angle formula to find the exact value of the expression.cos 

A. - 
B.
C. - 
D.

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