1. Determine the form of a particular solution for the following
differential equations. (Do not evaluate the coefficients.)
(a) y'' − y' − 6y = x^2 e^x sin x + (2x^3 − 1)e ^ cos x.
(b) y'' − y' − 6y = (2 − 3x^3 )e^3x .
(c) y'' + 4y' + 4y = x(e^x + e^−x )^2 .
(d) y'' − 2y' + 2y = (x − 1)e^x sin x + x^2 e^−x cos x.
2. Find a...
Determine the reasonable form of the particular solution for
each non homogeneous differential equation. Do not solve it.
a) y''-y'-2y= e^-x+xcos2x+e^xsin2x.
b) D^2[y] +4y =1+x^2+xsin2x.
Set up the appropriate form of the particular solution to each
of the differential equations below, but do NOT determine the
values of the coefficients.
(a) y′′ +10y′ +25y=2e^(5t) +te^(−5t)
b) y′′ +9y=5t^2 +4cos(3t)+6e^(3t)
Find the general solution of the following
differential equations (complementary function
+ particular solution). Find the particular solution by inspection
or by (6.18), (6.23),
or (6.24). Also find a computer solution and reconcile differences
if necessary, noticing
especially whether the particular solution is in simplest form [see
(6.26) and the discussion
after (6.15)].
(D2+2D+17)y = 60e−4x sin 5x
Using the method of undetermined coefficients determine the
exact (only) of a particular solution. Do not evaluate the
coefficients.
y''' + 2y'' + y' = 5e-tsin(t) + 3 +
7te-t
Use method of undetermined coefficients to find a particular
solution of the differential equation ?′′ + 9? = cos3? + 2. Check
that the obtained particular solution satisfies the differential
equation.
Find a particular solution yp of the following
EQUATIONS using the Method of Undetermined Coefficients. Primes
denote the derivatives with respect to x.
y''-16y=cos h(4x)
y''+36y=12cos(6x)+18sin(6x)
y''+4y'+8y=325e2tcos(5t)
y(5)+6y(4)-y=12
y(5)+2y(3)+2y''=8x2-2
SOLVE ALL ~ do ur besest (:
For each of the following differential equations, find the
particular solution that satisfies the additional given property
(called an initial condition).
y'y = x + 1
a) Determine the correct form of the particular solution
y" + y = sin x
b) Solve IVP: y" + y = e^x + x^3; y(0) = 2, y'(0) = 0
c) Solve IVP: y" + y' -2y = x + sin 2x; y(0) = 1, y'(0) = 0
Determine the general solution of the differential equations.
Write out the solution ? explicitly as a function of ?.
(a) 3?^2?^2 ??/?? = 2?−1
(b) 2 ??/?? + 3? = ?^−2? − 5