Find the exact value. cos²(? / 8) - sin²(? / 8)
What will be an ideal response?
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Mathematics
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Estimate the slope of the curve at the indicated point.
A. - 
B. 
C. 2
D. -2
Mathematics
Sketch the graph of the function.y = xe-x/2
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.If a ball is thrown upward at 64 feet per second from the top of a building that is 120 feet high, the height of the ball can be modeled by 
feet, where t is the number of seconds after the ball is thrown. After how many seconds does the ball reach its maximum height?
A. 3.8 sec B. 4 sec C. 1 sec D. 2 sec
Mathematics
Use the horizontal line test to determine whether the function is one-to-one.
A. Yes B. No
Mathematics