Find the sum Sn of the first n terms of the geometric sequence. 
, 
, 
, . . . ; n = 5
A. 341
B. 
C. 
D. 
Answer: C
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Find all the second order partial derivatives of the given function.f(x, y) = x2 + y - ex+y
A. 
= 2 + ex+y; 
= ex+y; 
= 
= ex+y
B. 
= 1 - ex+y; 
= - ex+y; 
= 
= -ex+y
C. 
= 2 - y2ex+y; 
= -x2ex+y; 
= 
= - y2ex+y
D. 
= 2 - ex+y; 
= - ex+y; 
= 
= -ex+y
Factor out the indicated common factor of the expression. Then completely factor the expression.1 - 13x-1 + 36x-2; x-2
A. x-2(x + 4)(x + 9) B. x-2(x - 4)(x - 9) C. x-2(x - 4)(x + 9) D. x-2(x2 - 13x + 36)
Solve the problem.In the weighted voting system 
,
A. P1 and P2 have equal power, P3 is not a dummy. B. P1 and P2 have equal power, P3 is a dummy. C. all three players have equal power. D. P1 has all the power, P2 and P3 are dummies. E. none of these
Solve the equation.
= 2
A. {4}
B. 
C. {2}
D. 