   Chapter 17.1, Problem 8E

Chapter
Section
Textbook Problem

Solve the differential equation.8. y = y"

To determine

To solve: The differential equation of y=y .

Explanation

Formula used:

Write the expression for differential equation.

ay+by+cy=0 (1)

Write the expression for auxiliary equation.

ar2+br+c=0 (2)

Write the expression for general solution of ay+by+cy=0 with two distinct real roots.

y=c1er1x+c2er2x (3)

Here,

r1 and r2 are the roots of auxiliary equation.

Consider the differential equation as follows.

y=y

yy=0 (4)

Compare equation (1) and (4).

a=1b=0c=1

Find the auxiliary equation.

Substitute 1 for a , 0 for b and 1 for c in equation (2),

(1)r2+(0)r+(1)=0r21=0(r1)(r+1)=0

Re-write equation as follows

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