Evaluate the expression by hand.81-3/2
A. 
B. - 
C. -729
D. 729
Answer: A
Mathematics
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Use integration by parts to establish a reduction formula for the integral.
A. 
= n xn-1 e- x2 + 2n 
B. 
= - 
xn e- x2 + 
C. 
= - 
xn-1 e- x2 + 
D. 
= - 2xn-1 e- x2 - 2(n - 1) 
Mathematics
Solve the problem.The following table shows the number of rectifiers, in thousands, produced by Allied Electronics in the three years considered. For a function of the form f(x) = ax2 + bx + c that fits this data, what is the value of b? 
A. 11 B. 9 C. 12 D. 10
Mathematics
Perform the division.(x2 - 25) ÷ (x - 5)
A. x - 25 B. x2 - 5 C. x + 25 D. x + 5
Mathematics
Use an analytic method to solve the equation.
+ 
= 4
A. {0}
B. {2, -2}
C. {
, -2}
D. {-2}
Mathematics