Determine whether the form represents a valid argument.p ~q ? ~p~p ? q

A. Invalid
B. Valid

Answer: A

Mathematics

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Use the method of undetermined coefficients to solve the differential equation.2 + 11 + 12y = -3x

A. y = c1e-4x + c2e-3x/2 -  - x
B. y = c1e4x + c2e3x/2 +  - x
C. y = c1e-4x + c2e-3x/2 +  + x
D. y = c1e-4x + c2e-3x/2 +  - x

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Mathematics

Solve the problem.Evaluate  at (u, v) = (3, 5) for the function w(x, y, z) = xz + yz - z2; x = uv, y = uv, z = u.

A. 54 B. 60 C. 0 D. -6

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Mathematics

Graph the linear inequality.x ? -5

A.

B.

C.

D.

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Mathematics

Evaluate. - 

A.
B.
C.
D.

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Mathematics