Find the flux of the vector field F across the surface S in the indicated direction.F = xi + yj + z2k; S is portion of the cone z = 3
between z = 3 and z = 6; direction is outward
A. - 
B. 
?
C. 
?
D. - 
?
Answer: D
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Use Descartes' Rule of Signs to determine the possible number of positive real zeros and the possible number of negative real zeros for the function.P(x) = 5x8 + 2x6 + 8x4 + 8x2 + 3
A. 0 positive; 0 or 2 negative B. 0 positive; 0 negative C. 0 or 2 positive; 0 negative D. 4 positive; 0 negative
Verify that the given equation is an identity.coth2x = 1 + csch2x
What will be an ideal response?
Suppose that y is inversely proportional to x. Use the given information to find the constant of proportionality k. Then use y = 
to find y for the given value of x.y = 12.5 when x = 5;
Find y given x = 25.
A. k = 62.5; y = 2.5 B. k = 70; y = 2.8 C. k = 2.5; y = 62.5 D. k = 55; y = 2.2
Solve the equation.
= 0
A. - 
, 
B. - 
, 
C. - 1, 
D. - 1, 