Computers and Technology, 16.10.2020 03:01 Thahani

You must use Python to solve all of the following problems, except the first one, for which you may use dfield. You will need to run the codes and print both the codes and the output (solution). 1) Draw a direction field for the equation y'=y+x-y^2 for -5 < x, y <5, and include the integral curves passing through (x_0,y_0)=(0,0), (2,3), and (-2,-3).
2) Solve the initial value problem (x^2-1)y' + 2xy^2 = 0, y(sqrt(2)) = 1. Give an explicit solution.
3) Solve the ODE xy' + 2y = sin(x), x > 0. Give an explicit solution.
4) Solve the IVP (1/x + 2y^2x)dx + (2yx^2 - cos(y))dy = 0, y(1) = pi. Give an implicit solution.
5) A tank contains 25 lb of salt dissolved in 50 gal of water. Brine containing 4 lb/gal enters the tank at a rate of 2 gal/min and leaves the tank at the same rate.
6) An object cools in 10 min from 100C to 60C. The surroundings are at a temperature of 20C. When will the object have cooled to 25C?7) Solve the differential equation y'' + 4y = sin(2t) - cos(2t).
(a) Determine the amount y of salt in the tank at time t
(b) When is there 150 lb of salt in the tank?

Answers: 2

Show answers

Another question on Computers and Technology

Computers and Technology, 21.06.2019 20:20

Sometimes writers elaborate on the truth when recalling past events so they can enhance their narrative essay with more interesting descriptions. do you feel that published writers should or should not embellish real life events just to make their stories more interesting?

Answers: 2

Answer

Computers and Technology, 22.06.2019 10:30

How can a user open a blank presentation? 1.on the file menu, click new, and then click recent templates 2.on the file menu, click new, and then click blank presentation 3. on the view menu, click templates, and then click recent templates 4. on the view menu, click samples, and then click blank presentation

Answers: 1

Answer

Computers and Technology, 22.06.2019 11:00

Ihave an iphone 8plus should i get another phone like samsung note 9 or s9 ? ?

Answers: 2

Answer

Computers and Technology, 22.06.2019 12:10

1. declare a constant named cents_per_pound and initialize with 25. 2. get the shipping weight from user input storing the weight into shipweightpounds. 3. using flat_fee_cents and cents_per_pound constants, assign shipcostcents with the cost of shipping a package weighing shipweightpounds.

Answers: 2

Answer

You know the right answer?

You must use Python to solve all of the following problems, except the first one, for which you may...

Questions