Exam 3: Second-Order Linear Differential Equations

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Consider this second-order nonhomogeneous differential equation: Consider this second-order nonhomogeneous differential equation:   Which of these is a suitable form of a particular solution Y(t) of the nonhomogeneous differential equation if the method of undetermined coefficients is used? Here, all capital letters represent arbitrary real constants. Which of these is a suitable form of a particular solution Y(t) of the nonhomogeneous differential equation if the method of undetermined coefficients is used? Here, all capital letters represent arbitrary real constants.

(Multiple Choice)
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Consider this initial value problem: Consider this initial value problem:     What is the general solution of the corresponding homogeneous differential equation? What is the general solution of the corresponding homogeneous differential equation?

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Which of the following are solutions to the homogeneous second-order differential equation Which of the following are solutions to the homogeneous second-order differential equation    Select all that apply. Select all that apply.

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Consider this second-order nonhomogeneous differential equation: Consider this second-order nonhomogeneous differential equation:   Which of the following is the form of the solution of the corresponding homogeneous differential equation? Here, C<sub>1</sub> and C<sub>2</sub> are arbitrary real constants. Which of the following is the form of the solution of the corresponding homogeneous differential equation? Here, C1 and C2 are arbitrary real constants.

(Multiple Choice)
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Suppose a 160-lb object stretches a spring 4 feet while in equilibrium, and a dashpot provides a damping force of 5 lbs for every foot per second of velocity. The form of the equation of unforced motion of the object in such a spring-mass system is Suppose a 160-lb object stretches a spring 4 feet while in equilibrium, and a dashpot provides a damping force of 5 lbs for every foot per second of velocity. The form of the equation of unforced motion of the object in such a spring-mass system is   where m is the mass of the object, c is the damping constant, and k is the spring constant. Assume that the spring starts at a height of 1/2 feet below the horizontal with an upward velocity of - 3 feet per second. What is the amplitude, R, (in feet) of the solution curve? Provide an exact value, not a decimal approximation. R = ____________________ feet where m is the mass of the object, c is the damping constant, and k is the spring constant. Assume that the spring starts at a height of 1/2 feet below the horizontal with an upward velocity of - 3 feet per second. What is the amplitude, R, (in feet) of the solution curve? Provide an exact value, not a decimal approximation. R = ____________________ feet

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Use variation of parameters to find the general solution of the nonhomogeneous differential equation Use variation of parameters to find the general solution of the nonhomogeneous differential equation

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Which of the following functions Y(t) is a particular solution of the differential equation Which of the following functions Y(t) is a particular solution of the differential equation

(Multiple Choice)
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Consider this second-order nonhomogeneous differential equation: Consider this second-order nonhomogeneous differential equation:   Which of these is a suitable form of a particular solution Y(t) of the nonhomogeneous differential equation if the method of undetermined coefficients is used? Here, all capital letters represent arbitrary real constants. Which of these is a suitable form of a particular solution Y(t) of the nonhomogeneous differential equation if the method of undetermined coefficients is used? Here, all capital letters represent arbitrary real constants.

(Multiple Choice)
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Consider this second-order nonhomogeneous differential equation: Consider this second-order nonhomogeneous differential equation:   Which of these is a suitable form of a particular solution Y(t) of the nonhomogeneous differential equation if the method of undetermined coefficients is to be used? Here, all capital letters represent arbitrary real constants. Which of these is a suitable form of a particular solution Y(t) of the nonhomogeneous differential equation if the method of undetermined coefficients is to be used? Here, all capital letters represent arbitrary real constants.

(Multiple Choice)
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Which of these is the general solution of the second-order nonhomogeneous differential equation Which of these is the general solution of the second-order nonhomogeneous differential equation   and all capital letters are arbitrary real constants. and all capital letters are arbitrary real constants.

(Multiple Choice)
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Which of these is a fundamental set of solutions for the differential equation Which of these is a fundamental set of solutions for the differential equation    Select all that apply. Select all that apply.

(Multiple Choice)
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Which of these is the general solution of the second-order nonhomogeneous differential equation Which of these is the general solution of the second-order nonhomogeneous differential equation   and all capital letters are arbitrary real constants. and all capital letters are arbitrary real constants.

(Multiple Choice)
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Which of the following is an accurate description of the long-term behavior of the solution of the initial value problem  Which of the following is an accurate description of the long-term behavior of the solution of the initial value problem   For any choice of \alpha and  \beta  satisfying   For any choice of α\alpha and β\beta satisfying  Which of the following is an accurate description of the long-term behavior of the solution of the initial value problem   For any choice of \alpha and  \beta  satisfying

(Multiple Choice)
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Which of these is the general solution of the second-order nonhomogeneous differential equation Which of these is the general solution of the second-order nonhomogeneous differential equation    and all capital letters are arbitrary real constants. and all capital letters are arbitrary real constants.

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What is the solution of this initial value problem: What is the solution of this initial value problem:

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Consider the pair of functions y1 = ln t and y1 = t ln t. Compute the Wronskian of this function pair.

(Multiple Choice)
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Suppose a 96-lb object stretches a spring 12 feet while in equilibrium and a dashpot provides a damping force of c libs for every foot per second of velocity. The equation of unforced motion of the object in such a spring-mass system is Suppose a 96-lb object stretches a spring 12 feet while in equilibrium and a dashpot provides a damping force of c libs for every foot per second of velocity. The equation of unforced motion of the object in such a spring-mass system is   where m is the mass of the object, c is the damping constant, and k is the spring constant. Determine the value of the constants m and k. (Use 1 slug = 32 lbs.)   where m is the mass of the object, c is the damping constant, and k is the spring constant. Determine the value of the constants m and k. (Use 1 slug = 32 lbs.) Suppose a 96-lb object stretches a spring 12 feet while in equilibrium and a dashpot provides a damping force of c libs for every foot per second of velocity. The equation of unforced motion of the object in such a spring-mass system is   where m is the mass of the object, c is the damping constant, and k is the spring constant. Determine the value of the constants m and k. (Use 1 slug = 32 lbs.)

(Short Answer)
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Consider this second-order nonhomogeneous differential equation: Consider this second-order nonhomogeneous differential equation:   Which of these is a suitable form of a particular solution Y(t) of the nonhomogeneous differential equation if the method of undetermined coefficients is used? Here, all capital letters represent arbitrary real constants. Which of these is a suitable form of a particular solution Y(t) of the nonhomogeneous differential equation if the method of undetermined coefficients is used? Here, all capital letters represent arbitrary real constants.

(Multiple Choice)
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Consider the initial value problem  Consider the initial value problem   For what value of ? does the solution of this initial value problem tend to zero as t  \rightarrow   \infty ? For what value of ? does the solution of this initial value problem tend to zero as t \rightarrow \infty ?

(Multiple Choice)
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