Evaluate or simplify the given expression.cos(2 sin-1 x)
A. 1 - 2x2
B. 1 - x2
C. 1
D. 2x2 + 1
Answer: A
Mathematics
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The graph of a quadratic function is given. Choose the function's equation.
A. f(x) = -x2 - 2 B. f(x) = -x2 + 4x + 4 C. f(x) = -x2 + 2 D. f(x) = -x2 - 4x - 4
Mathematics
Graph the circle. State the center and radius of the circle.x2 + (y - 2)2 = 16
A. center (0, 2); r = 4
B. center (2, 0); r = 4
C. center (-2, 0); r = 4
D. center (0, -2); r = 4
Mathematics
Find the integral.
A. - 
ln 
+ C
B. 
sec2 (x3) + C
C. - 3 ln 
+ C
D. - 
ln 
+ C
Mathematics
Find the equation of the least-squares line for the given data. Draw a scatter diagram for the given data and graph the least-squares line.
Mathematics