Find 
and 
.f(x, y) = xye-y
A. 
= ye-y; 
= xe-y(y - 1)
B. 
= ye-y; 
= xe-y
C. 
= ye-y; 
= xe-y(1 - y)
D. 
= ye-y; 
= - xye-y
Answer: C
Mathematics
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pital's rule to find the limit.
A. ?
B. 0
C. 7
D. 
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Find the derivative of y with respect to x.y = cos-1 (5x2 + 4)
A. 
B. 
C. 
D. 
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Construct a truth table for the statement.~p ? (~p ? q)
A. 
| T | T | F | F | T |
F T T T T
F F T F F
B.
| T | T | F | F | F |
F T T T F
F F T F T
C.
| T | T | F | T | T |
F T T T T
F F T T T
D.
| T | T | F | T | T |
F T T T T
F F T T T
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Rationalize the denominator and simplify. 
A. 
B. 
C. 
D. 
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