Compute the quadratic form xTAx for the given matrix A and vector x.A = , x = 

A. 2x1 - 9x2
B. 2 - 9
C. 4x1 - 18x2
D. -9 + 2


Answer: B

Mathematics

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Graph the circle.x2 + y2 = 49

A.

B.

C.

D.

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Solve. = 

A.
B.
C.
D.

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Find the standard deviation of the sample data in the frequency table. Round your answer to two decimal places. ? x 1 2 3 4 5 f(x) 4 3 2 2 3 ?

A. 2.79 B. 39.00 C. 2.49 D. 1.58 E. 2.50

Mathematics