Equations with the Dependent Variable Missing For a second-order differential equation of the form y” = f(t, y'), the substitution v = y', v' = y" leads to a first-order equation of the form v' f(t, v). If this equation can be solved for v, dy dt = then y can be obtained by integrating = v. Note that one arbitrary constant is obtained in solving the first-order equation for u, and a second is introduced in the integration for y. Use this substitution to solve the given equation. (1 + t²)y" + 2ty' + 9t−² = 0, y(1) = 6, y′(1) y(t) = ==

Calculus: Early Transcendentals
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ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
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Equations with the Dependent Variable Missing
For a second-order differential equation of the form y” = f(t, y'),
the substitution v = y', v' = y" leads to a first-order equation
of the form v' f(t, v). If this equation can be solved for v,
dy
dt
=
then y can be obtained by integrating = v. Note that
one arbitrary constant is obtained in solving the first-order
equation for u, and a second is introduced in the integration
for y. Use this substitution to solve the given equation.
(1 + t²)y" + 2ty' + 9t−² = 0, y(1) = 6, y′(1)
y(t) =
==
Transcribed Image Text:Equations with the Dependent Variable Missing For a second-order differential equation of the form y” = f(t, y'), the substitution v = y', v' = y" leads to a first-order equation of the form v' f(t, v). If this equation can be solved for v, dy dt = then y can be obtained by integrating = v. Note that one arbitrary constant is obtained in solving the first-order equation for u, and a second is introduced in the integration for y. Use this substitution to solve the given equation. (1 + t²)y" + 2ty' + 9t−² = 0, y(1) = 6, y′(1) y(t) = ==
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