Solve the following recurrence relation an=2an-1+an-2-2an-3 with initial conditions a0=3 a1=6 a2=0.
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The value of C1 is -1 and the value of C2 is 3
Given:
The recurrence relation of an=2an-1+an-2-2an-3 with initial conditions a0=3 a1=6 a2=0
To Find:
To get the value of C1 and C2 using the recurrence relation
Solution:
Let us find the solution of the recurrence relation,
an=2an-1+an-2-2an-3
Let us solve the characteristic equation
k^2=k+2
=k+2 which is equivalent to
k^2-k-2=0
and hence by Vieta's formulas has the solutions
k1=-1
and k2=2.k
follows that the solution of the equation is ,
an = C1
Since ,
a0 = 2
and a1 = 7
we have that ,
2 = =C1 +C2 and
7 = -C1 +2C2
Therefore,
C2 =3 and C1 = -1
We could conclude that,
an =
Hence, we get the equation as an =
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