Solve the Cauchy-Euler equation
t
2
y
′
′
+
7
t
y
′
+
9
y
=
0
\displaystyle {t}^{{2}}{y}{''}+{7}{t}{y}'+{9}{y}={0}
t
2
y
′′
+
7
t
y
′
+
9
y
=
0
with intitial conditions
y
(
1
)
=
10
,
y
′
(
1
)
=
−
1
\displaystyle {y}{\left({1}\right)}={10},{y}'{\left({1}\right)}=-{1}
y
(
1
)
=
10
,
y
′
(
1
)
=
−
1
.
y
(
t
)
=
\displaystyle {y}{\left({t}\right)}=
y
(
t
)
=
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