Question

B2=18 b4=8 b1,q? (геом.прог)

Answer 1

Решение во вложении. удачи!

Answer 2

To find the value of the term "b1" in the geometric progression, we can use the formula for the nth term of a geometric progression:

$a_n = a_1 \times r^{(n-1)}$

Where:

• $a_n$ is the nth term (in this case, the term we want to find is "b1").
• $a_1$ is the first term (given as "B2" which is 18).
• $r$ is the common ratio between consecutive terms.
• $n$ is the position of the term we want to find.

We are given that:

• $B2 = 18$
• $B4 = 8$

Now, we need to find the common ratio ($r$) using the given terms $B2$ and $B4$:

$r = \frac{B4}{B2} = \frac{8}{18} = \frac{4}{9}$

Now, we can find the value of $b1$ by substituting the known values into the formula:

$b1 = B2 \times r^{(1-1)} = 18 \times \left(\frac{4}{9}\right)^0 = 18 \times 1 = 18$

So, the value of $b1$ in the geometric progression is 18.