Use the region R to evaluate the double integral. RR bounded by xy = 4, x + y = 5

A. 12
B. 6
C. 9
D. 8


Answer: C

Mathematics

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Use the limit definition of the partial derivative to compute the indicated partial derivative of the function at the specified point.Find  at the point (-10, -3): f(x ,y) = 8x2 + 2xy + 3y2 

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Mathematics

Prove that the equation is an identity.  = 

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Mathematics

Multiply the complex numbers and simplify powers of i.(6 - 9i)(2 + 4i)

A. 48 + 6i B. 48 - 6i C. -36i2 + 6i + 12 D. -24 - 42i

Mathematics

Find the horizontal asymptote, if any, of the graph of the rational function.f(x) = 

A. y = -5
B. y = - 
C. y = 0
D. no horizontal asymptote

Mathematics