The letters x and y represent rectangular coordinates. Write the equation using polar coordinates (r, ?).y = x
A. r = sin ?
B. r = cos ?
C. sin ? = cos ?
D. sin ? = - cos ?
Answer: C
Mathematics
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Find the indicated vector.Let u = 
, v = 
. Find v - u.
A. 
B. 
C. 
D. 
Mathematics
Describe the largest set S on which it is correct to say that f is continuous.f(x, y) = 
A. {(x, y): 6x + 10y ? 0} B. Entire plane C. {(x, y): x + y ? 0} D. {(x, y): 6x + 10y ? 0}
Mathematics
Solve the problem.Find the average distance from a point 
in the region bounded by 
to the origin.
A. 
B. 
C. 
D. 
Mathematics
Determine whether the relation defines y as a function of x. Give the domain.y = 
A. Not a function; domain: 
B. Not a function; domain: 
C. Function; domain: (-?, ?)
D. Function; domain: 
Mathematics