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
What will be an ideal response?
Mathematics
Prove that the equation is an identity.
= 
What will be an ideal response?
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