Decide whether the composite functions, f ? g and g ? f, are equal to x.f(x) = 
, g(x) = x
A. No, yes
B. Yes, no
C. Yes, yes
D. No, no
Answer: D
Mathematics
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Evaluate the double integral over the given region.
R: 5 ? x ? 7, 5 ? y ? 7
A. 
2
B. 
2
C. ln 
D. 
Mathematics
Solve the problem.Open parallel transmission lines have a characteristic impedance given by 
Write the expression on the right side as the logarithm of a single quantity.
A. log 10 (a/b) B. 252 log 10 (a/b) C. log 10 (a - b)252 D. log 10 (a/b)252
Mathematics
Write the equation for the line passing through the point (15,17) which is perpendicular to the line y = 7.
What will be an ideal response?
Mathematics
Find the product. Write the answer in standard form.(8 - 4i)(7 + 5i)
A. 76 + 12i B. 76 - 12i C. -20i2 + 12i - 56 D. 36 - 68i
Mathematics