Find the interval of convergence of the power series. (Be sure to include a check for convergence at the endpoints of the interval.)
?
?
A. 
B. 
C. 
D. 
E. 
Answer: E
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Find all the first order partial derivatives for the following function.f(x,y,z) = xe(x2 + y2 + z2)
A. 
= (1 + 2x2) e(x2 + y2 + z2); 
= 2xye(x2 + y2 + z2); 
= 2xze(x2 + y2 + z2)
B. 
= 2x2e(x2 + y2 + z2); 
= xye(x2 + y2 + z2); 
= 2xze(x2 + y2 + z2)
C. 
= (1 + 2x2) e(x2 + y2 + z2); 
= xe(x2 + y2 + z2); 
= xe(x2 + y2 + z2)
D. 
= (1 + 2x2) e(x2 + y2 + z2); 
= xy2e(x2 + y2 + z2); 
= xz2e(x2 + y2 + z2)
Find the root. Assume that all variables represent nonnegative real numbers. 
A. 9x4y2 B. not a real number C. 3x2y4 D. 4.264x2y4
Multiply.(x + 5)(x2 - x + 7)
A. x3 + 6x2 + 12x + 35 B. x3 + 35 C. x3 + 4x2 + 2x + 35 D. x3 + 4x2 + 35
Identify the intercepts.
A. (1, 1), (-1, -1) B. (1, 0), (0, -1) C. (-1, 0), (0, -1) D. (1, 0), (0, 1)