
(a)
Thecritical points and classify them as asymptotically stable or unstable. Also draw the phase line and several graphs of solution in tu1− plane of equation du1dt=−(k1+k2)u1+k2u20+k1Ta, where k1,k2,u20 and Ta are constants.
(b)
Thesolution of equation du1dt=−(k1+k2)u1+k2u20+k1Ta subject to the initial condition u1(0)=u10, where k1,k2,u20 and Ta are constants. Use this solution to verify the qualitative result of part (a).
(c)
Thephysical interpretation of setting ε=0 and the equilibrium solution u1=k2u20+k1Tak1+k2.
(d)
Thequalitative results implying the sizing of the rock storage pile in combination with temperature that can be achieved in the rock storage pile during the daytime.

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Chapter 3 Solutions
Differential Equations: An Introduction to Modern Methods and Applications
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- Linear Algebra: A Modern IntroductionAlgebraISBN:9781285463247Author:David PoolePublisher:Cengage Learning
