Use trigonometric identities to find the exact value.
A. - 
B. -2
C. - 
D. - 
Answer: A
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Use logarithmic differentiation to find the derivative of y with respect to the independent variable.y = (x + 8)x
A. x ln(x + 8)
B. (x + 8)x
C. ln(x + 8) + 
D. x + (8)x-1
Solve the problem.Find the extreme values of 
subject to 
and 
A. Maximum: 3
at 
minimum: - 3
at 
B. Maximum: 4
at 
minimum: - 4
at 
C. Maximum: 2
at 
minimum: - 2
at 
D. Maximum: 
at 
minimum: - 
at 
Provide the requested proof.In the figure below, BD = CD. Prove that 
What will be an ideal response?
Solve the problem.A building has an entry with the shape of a parabolic arch 92 feet high and 42 feet wide at the base. Find an equation for the parabola if the vertex is placed at the origin of the coordinate system.
A. y2 = -19.2x B. y2 = -4.8x C. x2 = -4.8y D. x2 = -19.2y