Compute the determinant of the matrix by cofactor expansion.
A. -18
B. 18
C. 0
D. -9
Answer: B
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Divide.
÷ 
A. - 
B. -15
C. - 
D. - 
Eliminate the parameter to find a description of the circle or circular arc in terms of x and y.x = 2 cos t, y = 2 sin t; -? ? t ? ?
A. x2 + y2 = 2; The curve is a circle with center (0, 0) and radius 2; the curve begins at (-4, 0) and is oriented counterclockwise, ending at (-4, 0). B. x2 + y2 = 4; The curve is a circle with center (0, 0) and 2 in Quadrants III and IV; the circular arc begins at (-2, 0) and is oriented counterclockwise, ending at (2, 0). C. x2 + y2 = 4; The curve is a circle with center (0, 0) and radius 2; the curve begins at (-4, 0) and is oriented counterclockwise, ending at (-4, 0). D. x2 + y2 = 4; The curve is a circle with center (0, 0) and radius 2; the curve begins at (-4, 0) and is oriented clockwise, ending at (-4, 0).
Multiply.
A. 63,039,328 B. 63,028,328 C. 63,029,428 D. 63,029,328
Use transformations to graph the function.y = -3 cos x
A. 
B. 
C. 
D. 