In an arithmetic sequence
In a geometric sequence
Write the equations in terms of and , then solve the systems.
Hi im a bit confused about these questions here. I do not know where to start, but much help is appreciated.
Question 1
In an arithmetic sequence t4 + t5 + t6 = 300 and t15 + t16 + t17 = 201
Find t18
Question 2
In a geometric sequence t1 + t2 + t3 = 21 and t4 + t5 + t6 = 168
Find the squence
Thanks in advance =]
Another way for the first one.
The n-th term of an arithmetic sequence is given by where n > m and d is common difference.
You are given the sum of consecutive odd-numbered terms. The arithmetic mean of these terms is the middle term. For instance:
Note that this applies only for the arithmetic sequence.