Mathematics, 25.02.2020 17:21, isaiahmyers3410
We have not discussed methods by which systems of first-order differential equations can be solved. Nevertheless, systems such as dx dt = −λ1x dy dt = λ1x − λ2y dz dt = λ2y (which is discussed here) can be solved with no knowledge other than how to solve a single linear first-order equation. Suppose that time is measured in days, that the decay constants are k1 = −λ1 = −0.135229 and k2 = −λ2 = −0.004951, and that x(0) = 20, y(0) = 0, z(0) = 0. Use a graphing utility to obtain the graphs of the solutions x(t), y(t), and z(t) on the same set of coordinate axes. Use the graphs to approximate the half-lives of substances X and Y. (Round your answer to the nearest integer.) X days Y days
Answers: 2
Mathematics, 21.06.2019 17:00, ruslffdr
Arestaurant offers a $12 dinner special that has 5 choices for an appetizer, 12 choices for an entrée, and 4 choices for a dessert. how many different meals are available when you select an appetizer, an entrée, and a dessert? a meal can be chosen in nothing ways. (type a whole number.)
Answers: 1
Mathematics, 21.06.2019 19:00, gharrell03
Satchi found a used bookstore that sells pre-owned dvds and cds. dvds cost $9 each, and cds cost $7 each. satchi can spend no more than $45.
Answers: 1
We have not discussed methods by which systems of first-order differential equations can be solved....
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