Write the trigonometric expression as an algebraic expression containing u and v.cos(tan-1 u + tan-1 v)
A. 
B. 
C. 
D. 
Answer: D
Mathematics
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Sketch D and g(D) from the description of D and change of variables 
u = xy, v = 
where D is the rectangle 1 ? x ? 4, 
? y ? 2
?
A.
 ? |  |
B. None of these.
C.
 ? |  |
D.
 ? |  |
Mathematics
Evaluate.73
A. 242 B. 243 C. 49 D. 343
Mathematics
Evaluate the expression for the given replacement values.5y - z
for y = 1.2 and z = 2.7
A. 3.3 B. 12.3 C. 7.2 D. 8.7
Mathematics
Add.-22 + 6 + (-20)
A. 4 B. -36 C. 8 D. 48
Mathematics