Multiply.(-23)(7.78)
A. 30.88
B. 15.22
C. 30.78
D. -178.94
Answer: D
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Evaluate the integral by making a substitution (possibly trigonometric) and then applying a reduction formula.
A. 
+ C
B. 
+ C
C. 
ln
+ C
D. 
+ C
At what points is the given function continuous?f(x, y) = 
A. All (x, y) such that x ? y B. All (x, y) C. All (x, y) ? (0, 0) D. All (x, y) such that x ? - y
Provide an appropriate response.Define f(0, 0) in a way that extends f(x, y) = 
to be continuous at the origin.
A. f(0, 0) = 2 B. f(0, 0) = 0 C. f(0, 0) = 6 D. f(0, 0) = 12
Answer the question.Assume a is positive, b is negative, and c is positive for the expressiona - ( b / c)Tell whether the value of the given expression is positive, negative or cannot be determined.
A. Negative B. Positive C. Cannot be determined