
8. (10 points) Consider the differential equation (DE) y" + 6y' + cy = 0. where...
(a) Draw a direction field for the given differential equation. (b) Based on an inspection of the direction field, describe how solutions behave for large t. All solutions seem to approach a line in the region where the negative and positive slopes meet each other. The solutions appear to be oscillatory. All solutions seem to eventually have positive slopes, and hence increase without bound. If y(0) > 0, solutions appear to eventually have positive slopes, and hence increase without bound....
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1. Confirming Solutions to Differential Equations: Verify that each function does in fact solve the given differential equation. If there are parameters in the function (A. b. k), give the range of values of those parameters for which that function is a solution. The prime indicates differentiation with respect od dr' (b) y" + 4y = 0; y = A sin(kx + φ). (c) y"-4s, + 4y = 0, y = Axe . (d) x2y', +...
Q1 (10 points) Consider the differential equation ty" _ y = 0. a) is this differential equation linear? What is its order? Is it homogeneous? b) Try a solution of the form y=x". Is this a solution for some r? If so, find all such r. c) Based on your answer to a) about linearity and b) about what y=x" are solutions, make an educated guess a the general solution looks like. Try that guess and check that it works....
Solve the given differential equation with initial condition. y'-6y = 0, y(0) = 9 The solution is y(t) = (Type an exact answer.)
Question 2 (15 points) Solve the differential equation for the general solution y 6y' 73y 0 y(t) C cos(3t) C2 sin(3t) y(t) = C1 cos(8t) + C2 sin(8t) y(t) cos(8t) +C2e" sin(St) y(t) Ce cos(8t) Cest sin (8t) y (t) = Cleft cos (8t) + C2eft sin (8t) (t)Cest cos(9)Cesin (9t) Previous Page Next Page Page 2 of9
1. 10 points Given y(x) x 'is a solution to the differential equation x’y"+ 6xy'+6y=0 (x > 0), find a second linearly independent solution using reduction of order.
Alinear constant coefficient differential equation is given by dyt) + dy ) + cy(t) = 0 Compute the homogeneous solution, yn (t), given that b=8, c=2 and initial conditions y(0) = CO and 490 = c. Given that the initial conditions are co = 0 and ci = 1, evaluate your homogeneous solution at the time t=7 8. Your solution should be the value y(7.8) which is the homogeneous solution evaluated at t=7.8. Make sure you type in a solution...
Consider the following differential equation.
(1 + 5x2) y′′ − 8xy′
− 6y = 0
(a)
If you were to look for a power series solution about
x0 = 0, i.e., of the form
∞
Σ
n=0
cn xn
then the recurrence formula for the coefficients would be given by
ck+2 =
g(k) ck , k
≥ 2. Enter the function g(k) into the answer
box below.
(b)
Find the solution to the above differential equation with
initial conditions y(0) ...
6. Consider the autonomous differential equation (a) Find all of its equilibrium solutions. (b) Classify the stability of each equilibrium solution. Justify your answer. (c) If y(t) is a solution that satisfies y(-1) =-4, what is y(0)? Without solving the equation, briefly explain your conclusion. (d) If y() is a solution that satisis y(3) -3, then what is lim y(t)?
6. Consider the autonomous differential equation
(a) Find all of its equilibrium solutions. (b) Classify the stability of each equilibrium...
Consider the following differential equation. (1 + 5x2)y" – 8xY' – 6y = 0 (a) If you were to look for a power series solution about xo = 0, i.e., of the form Σ τη x2 n=0 then the recurrence formula for the coefficients would be given by C +2 g(k) Cx. k > 2. Enter the function g(k) into the answer box below. (b) Find the solution to the above differential equation with initial conditions (0) = 0 and...