Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = x2
A. Yes, yes
B. No, yes
C. No, no
D. Yes, no
Answer: A
Mathematics
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Solve the problem.A mass hangs from a spring which oscillates up and down. The position P of the mass at time t is given by P = 4 cos(4t)What is the amplitude? What is the period? Graph this function over two periods beginning at t = 0. 
What will be an ideal response?
Mathematics
Solve. x + y + z = -5 x - y + 3z = -195x + y + z = -13
A. (-2, 2, -5) B. (-5, 2, -2) C. (-2, -5, 2) D. (-5, -2, 2)
Mathematics
Find the square root.
A. 
B. 
C. 
D. 
Mathematics
Find the indicated sum.1 + 
+ 
+ 
+ . . .
A. does not exist
B. 
C. 
D. 
Mathematics