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Lena [83]
2 years ago
8

Solve this recurrence relation together with the initial condition given. an = 2an−1 for n ≥ 1, a0 = 3

Mathematics
1 answer:
zysi [14]2 years ago
6 0

The solution of the recurrence relation is a_n=3.2^n

For given question,

We have been given a recurrence relation a_n = 2a_{n-1} for n ≥ 1

and an initial condition a_0=3

Let a_n = m², a_{n-1} = m and a_{n-2} = 1

So from given recurrence relation we get an characteristic equation,

⇒ m² = 2m

⇒ m² - 2m = 0                     .........( Subtract 2m from each side)

⇒ m(m - 2) = 0                     .........(Factorize)

⇒ m = 0    or  m - 2 = 0

⇒ m = 0   or   m = 2

We know that the solution of the recurrence relation is then of the form

a_n=\alpha_1 {m_1}^n + \alpha_2 {m_2}^n  where m_1,m_2 are the roots of the characteristic equation.

Let, m_1 = 0   and m_2 = 2

From above roots,

\Rightarrow a_n=\alpha_1 {0}^n + \alpha_2 {2}^n\\\\\Rightarrow a_n=0+\alpha_2 {2}^n\\\\\Rightarrow a_n=\alpha_2 {2}^n

For n = 0,

\Rightarrow a_0=\alpha_2 {2}^0\\\\\Rightarrow a_0=\alpha_2 \times 1\\\\\Rightarrow a_0=\alpha_2

But  a_0=3

This means \alpha_2=3

so, the solution of the recurrence relation would be a_n=3.2^n

Therefore, the solution of the recurrence relation is a_n=3.2^n

Learn more about the recurrence relation here:

brainly.com/question/27618667

#SPJ4

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Wilson's commission is $469.04

Step-by-step explanation:

Given,

Commission = 11%

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A total of 70 tickets were sold for a concert and earn the organizers $804. If the cost of each ticket is either $10 or $12, how
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Step-by-step explanation:

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