0 reads0 ratings0 helpful
In an arithmetic sequence, (a_1=14) and (a_6=-1). What is its explicit rule?
Advertisement
Answer and explanation
Correct answer: (a_n=17-3n)
The total change over five gaps is (-15), so (d=-3), hence (a_n=14+(n-1)(-3)=17-3n). Find the common difference first.
Frequently asked questions
What is the correct answer to this question?
(a_n=17-3n)
Why is this the correct answer?
The total change over five gaps is (-15), so (d=-3), hence (a_n=14+(n-1)(-3)=17-3n). Find the common difference first.
Which subject and chapter does this question cover?
This is a Class 9 Mathematics question. Chapter: Sequences and Progressions. Topic: Explicit or general rule.
Student feedback
Was this question useful?
Was this question useful?
👍 0 Helpful 👎 0 Not helpful
Difficulty
Easy0%
Medium0%
Hard0%
Was the explanation clear?
Yes 0% No 0%
0 responsesStudent Reviews
No published reviews yet.
Advertisement