)A Bernoulli differential equation is one of the form dy + P(x)y = Q(x)y" (*) dx : 0 or 1, the Bernoulli equation is linear. For other values of n, yl-n transforms the Bernoulli equation into the linear equation Observe that, if n the substitution u du + (1 — п)Р(«)и — (1 — п)Q(»). dx Consider the initial value problem xy' + y = –3xy², y(1) = –1. (a) This differential equation can be written in the form (*) with P(x) = Q(x) = , and n = (b) The substitution u = will transform it into the linear equation du U = dx (c) Using the substitution in part (b), we rewrite the initial condition in terms of x and и: u(1) =

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Chapter1: Functions And Models
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) A Bernoulli differential equation is one of the form
dy
+ P(x)y = Q(x)y"
(*)
dx
Observe that, if n = 0 or 1, the Bernoulli equation is linear. For other values of n, the
yl-n transforms the Bernoulli equation into the linear equation
substitution u =
du
+ (1 — п)P(г)и %3D (1 — п)Q(г).
dx
Consider the initial value problem
xy' + y = -3xy?, y(1) = -1.
(a) This differential equation can be written in the form (*) with
P(x)
Q(x) =
, and
= U
(b) The substitution u =
will transform it into the linear
equation
du
U =
dx
(c) Using the substitution in part (b), we rewrite the initial condition in terms of x and
и:
u(1) =
(d) Now solve the linear equation in part (b), and find the solution that satisfies the
initial condition in part (c).
u(x)
Transcribed Image Text:) A Bernoulli differential equation is one of the form dy + P(x)y = Q(x)y" (*) dx Observe that, if n = 0 or 1, the Bernoulli equation is linear. For other values of n, the yl-n transforms the Bernoulli equation into the linear equation substitution u = du + (1 — п)P(г)и %3D (1 — п)Q(г). dx Consider the initial value problem xy' + y = -3xy?, y(1) = -1. (a) This differential equation can be written in the form (*) with P(x) Q(x) = , and = U (b) The substitution u = will transform it into the linear equation du U = dx (c) Using the substitution in part (b), we rewrite the initial condition in terms of x and и: u(1) = (d) Now solve the linear equation in part (b), and find the solution that satisfies the initial condition in part (c). u(x)
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