Fhaw6666
Fhaw6666 Fhaw6666
  • 20-10-2021
  • Mathematics
contestada

A sequence is defined recursively by

a1=4

an=34an−1

What is the explicit form of this sequence?

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 20-10-2021

9514 1404 393

Answer:

  an = 4×34^(n-1)

Step-by-step explanation:

If your recursive definition is ...

  [tex]\begin{cases}a_1=4\\a_{n}=34a_{n-1}\end{cases}[/tex]

this defines a geometric sequence with a first term a1 = 4 and a common ratio of r = 34. The general form of the explicit function is ...

  [tex]a_n=a_1\times r^{n-1}[/tex]

For the values shown here, the explicit definition of the sequence is ...

  [tex]\boxed{a_n=4\times 34^{n-1}}[/tex]

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