Verify the identity.cos 4x = 2 cos2 2x - 1
What will be an ideal response?
cos 4x = cos [2(2x)] = 2 cos2 2x - 1
Mathematics
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Graph the circle.x2 + y2 - 6x = -4y + 3 
A. 
B. 
C. 
D. 
Mathematics
Determine whether or not the graph is a graph of a function of x.
A. Function B. Not a function
Mathematics
Determine whether the given function is one-to-one. If it is one-to-one, find its inverse function.f(x) = 
A. one-to-one function; f-1(x) = 
B. one-to-one function; f-1(x) = 
C. one-to-one function; f-1(x) = -2x
D. not a one-to-one function
Mathematics
Solve the equation by the method of your choice. Simplify irrational solutions, if possible.2x2 + 12x = - 3
A. 
B. 
C. 
D. 
Mathematics