Simplify.i57
A. -1
B. 1
C. -i
D. i
Answer: D
Mathematics
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Solve the equation.
= 
A. 
B. 
C. 
D. 
Mathematics
Solve the problem.dy/dt = ky + f(t) is a population model where y is the population at time t and f(t) is some function to describe the net effect on the population. Assume k = .02 and 
when t = 0. Solve the differential equation of y when f(t) = 9t.
A. y = -450t - 22,500 + 32,500e-.02t B. y = 450t - 22,500 + 32,500e-.02t C. y = 450t + 22,500 + 32,500e-.02t D. y = -450t - 22,500 + 32,500e.02t
Mathematics
Evaluate the integral.
A. 
B. - 
C. 
D. - 
Mathematics
Write the number mentioned in the statement in scientific notation.The population of a small country is 7,064,000.
A. 7.064 × 10-5 B. 7.064 × 105 C. 7.064 × 104 D. 7.064 × 106
Mathematics