Use the square root method to solve the equation.
A. 
B. 
C. 
D. 
E. 
Answer: A
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Use reduction formulas to evaluate the integral.
A. 
tan4 2x - 
tan2 2x + 
ln
+ C
B. 
tan4 2x - 
tan2 2x - ln
+ C
C. - 
tan4 2x + 
tan2 2x - 
ln
+ C
D. 
tan4 2x - 
tan2 2x - 
ln
+ C
The sizes of two matrices are given. Find the size of the product AB and the size of the product BA, if the given product can be calculated.A is 1 × 4; B is 1 × 4.
A. AB is 4 × 1; BA is 1 × 4. B. AB is 1 × 4; BA is 4 × 1. C. AB is 1 × 1; BA is 4 × 4. D. AB cannot be calculated; BA cannot be calculated.
Determine the specific solutions (if any) to the equation on the interval [0, 2?).sin2 2? = 1
A. 0, 
, ?, 
B. 
, 
, 
, 
C. no solution
D. 
, 
Find the center, foci, and vertices of the ellipse.36x2 + 81y2 = 2,916
A. center at (0, 0)
foci at (-9, 0) and (9, 0)
vertices at (-81, 0), (81, 0)
B. center at (0, 0)
foci at (0, -6) and (0, 6)
vertices at (0, -36), (0, 36)
C. center at (0, 0)
foci at (- 3
, 0) and (3
, 0)
vertices at (-9, 0), (9, 0)
D. center at (0, 0)
foci at (0, - 3
) and (0, 3
)
vertices at (0, -9), (0, 9)