Find the quadratic approximation of f at x = 0.f(x) = ln(cos 7x)
A. Q(x) = 1 + 
x2
B. Q(x) = 
x2
C. Q(x) = - 
x2
D. Q(x) = 1 - 
x2
Answer: C
Mathematics
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Translate the phrase to an algebraic expression.six times the quantity x minus y
A. 6 + (x - y) B. 6x - y C. 6 - (x - y) D. 6(x - y)
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Solve the problem.Find the volume of the solid generated by revolving the region in the first quadrant bounded by the x-axis and the curve y = sin 4x, 0 ? x ? ?/4 about the line x = ?/4.
A. 
?2
B. 
?
C. 
?2 - ?
D. 
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The letters r and ? represent polar coordinates. Write the equation using rectangular coordinates (x, y).r = cos ?
A. (x + y)2 = y B. x2 + y2 = x C. x2 + y2 = y D. (x + y)2 = x
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Find the area of the specified region.Inside the graph of r = 1 + cos 3?
A. 
B. 3?
C. 3? + 
D. 
+ 
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