Eliminate the parameter to find a Cartesian equation for the hyperbola.x = sec t + 2, y = 2 tan t + 5
A. (x - 2)2 + 
= 1
B. (y - 2)2 - 
= 1
C. (x - 2)2 - (y - 5)2 = 4
D. (x - 2)2 - 
= 1
Answer: D
Mathematics
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Write the function in the form y = f(u) and u = g(x). Then find dy/dx as a function of x.y = cos3 x
A. y = cos u; u = x3; 
= - 3x2 sin(x3)
B. y = u3; u = cos x; 
= 3 cos2 x sin x
C. y = u3; u = cos x; 
= - 3 cos2 x sin x
D. y = cos u; u = x3; 
= - sin(x3)
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Express as a sum of logarithms.logr 8T
A. log 8 + log T B. log7 r + logT r C. logr 8 + logr T D. logr 8 + logr T + logr r
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Determine the vertex of the graph of the parabola.y = x2 - 1
A. (1, 0) B. (0, -1) C. (0, 1) D. (-1, 0)
Mathematics
Express the phrase as a ratio in lowest terms.135 cm to 75 cm
A. 
B. 
C. 
D. 
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