Two tanks, A and B, each contain 10 L of salt water. Initially, 31 g of salt are found in A, and 27 g of salt are found in B. At some time, a salt water solution containing 3 g per L is pumped into A at a rate of 4 L per minute, and the well stirred solution in B is pur same rate. At exactly the same time the well stirred mixture in A is pumped into B at a rate of 6 L per minute, and the well stirred mixture in at a rate of 2 L per minute. Let u = u(t) be the amount of salt (in g) in A at time t (in minutes), and let v = v(t) be the amount of salt (in g) in B at time t (in minutes du dt |(be exact and use u, v rather than u(t), v(t)) dv dt | (be exact and use u, v rather than u(t), v(t)) || ||

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ISBN:9780470458365
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Chapter2: Second-order Linear Odes
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Two tanks, A and B, each contain 10 L of salt water. Initially, 31 g of salt are found in A, and 27 g of salt are found in B.
At some time, a salt water solution containing 3 g per L is pumped into A at a rate of 4 L per minute, and the well stirred solution in B is pumped out at the
same rate. At exactly the same time the well stirred mixture in A is pumped into B at a rate of 6 L per minute, and the well stirred mixture in B is pumped into A
at a rate of 2 L per minute.
Let u = u(t) be the amount of salt (in g) in A at time t (in minutes), and let v = v(t) be the amount of salt (in g) in B at time t (in minutes). Then
du
dt
AA (be exact and use u, v rather than u(t), v(t))
dv
dt
AA (be exact and use u, v rather than u(t), v(t))
with
u(0) = 31, and v(0) = 27.
Over time, the amount of salt in A tends to Number
grams, and the amount of salt in B tends to Number
grams.
Transcribed Image Text:Two tanks, A and B, each contain 10 L of salt water. Initially, 31 g of salt are found in A, and 27 g of salt are found in B. At some time, a salt water solution containing 3 g per L is pumped into A at a rate of 4 L per minute, and the well stirred solution in B is pumped out at the same rate. At exactly the same time the well stirred mixture in A is pumped into B at a rate of 6 L per minute, and the well stirred mixture in B is pumped into A at a rate of 2 L per minute. Let u = u(t) be the amount of salt (in g) in A at time t (in minutes), and let v = v(t) be the amount of salt (in g) in B at time t (in minutes). Then du dt AA (be exact and use u, v rather than u(t), v(t)) dv dt AA (be exact and use u, v rather than u(t), v(t)) with u(0) = 31, and v(0) = 27. Over time, the amount of salt in A tends to Number grams, and the amount of salt in B tends to Number grams.
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