Find the exact value of the expression.
A. - 
B. - 
C. -2
D. -
Answer: D
Mathematics
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Evaluate the improper integral or state that it is divergent. 
A. 4 ln
B. 2
2
C. 4 ln 
D. 4 ln 2
Mathematics
Solve the given differential equation.4y" - 20y' + 25y = 0
A. y = c1e5x/2 + c2 B. y = ce5x/2 C. y = (c1 + c2x)e-5x/2 D. y = (c1 + c2x)e5x/2
Mathematics
Evaluate the expression with the given replacement values.-7x3y; x = 2 and y = -2
A. 112 B. 56 C. 84 D. -112
Mathematics
Plot the complex number in the complex plane.2i
A. 
B. 
C. 
D. 
Mathematics