contestada

Indicate a general rule for the nth term of the sequence when a1 = 5 and r = √3 .

an = (√3)(5)n + 1
an = (√3)(5)n - 1
an = (5)(√3)n - 1
an = (5)(√3)n + 1

Respuesta :

prabinmagar

the right answer is an=5(3)^(n-1)/2

Answer:

C. [tex]a_n=5\cdot (\sqrt{3})^{n-1}[/tex]

Step-by-step explanation:

We have been given that first term of a geometric sequence is 5 and common ratio is [tex]\sqrt{3}[/tex]. We are asked to find the general rule for the nth term of the sequence.

We know that a geometric sequence is in form [tex]a_n=a_1\cdot (r)^{n-1}[/tex], where,

[tex]a_n[/tex] = nth term of the sequence,

[tex]a_1[/tex] = 1st term of the sequence,

r = Common ratio,

n = Number of terms in sequence.

Upon substituting our given values in general form of geometric sequence, we will get:

[tex]a_n=5\cdot (\sqrt{3})^{n-1}[/tex]

Therefore, option C is the correct choice.