The differential equation 
is a model for an undamped spring-mass system with a nonlinear restoring force. The initial conditions are 
, 
. The
solution of the linearized system is
Select the correct answer.
?
A. 
B. 
C. 
D. 
E. 
Answer: D
Mathematics
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Evaluate the integral by making a substitution (possibly trigonometric) and then applying a reduction formula.
A. 
+ C
B. 
+ C
C. 
ln
+ C
D. 
+ C
Mathematics
Use the integral test to determine whether the series converges.
A. diverges B. converges
Mathematics
Evaluate the expression.-73
A. 21 B. -21 C. -343 D. 343
Mathematics
Provide an appropriate response.
How many people were surveyed?
A. 45 B. 58 C. 47 D. 10
Mathematics