Find the unknowns on the right side of the partial fraction decomposition.
= 
+ 
A. A = - 
, B = 
B. A = 
, B = - 
C. A = 
, B = - 
D. A = - 
, B = 
Answer: B
Mathematics
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Solve the problem.When a particular circuit containing a resistor, an inductor, and a capacitor in series is connected to a battery, the current i (in amperes) is given by i = 23e-3t(e2.6t - e-2.6t) where t is the time (in seconds). Find the time at which the maximum current occurs.
A. 0.6 sec B. 1.5 sec C. 0.5 sec D. 1.4 sec
Mathematics
Add or subtract as indicated. Write the answer in simplest form.- 
+ 
A. 
B. - 
C. 
D. - 
Mathematics
Solve the equation by completing the square.x2 + 4x - 21 = 0
A. -14, -7
B. 
, -1
C. 3, -7
D. -3, 7
Mathematics
Choose the graph that satisfies the given conditions.Polynomial of degree 3 with three distinct x-intercepts and a positive leading coefficient
A. 
B. 
C. 
D. 
Mathematics