Arithmetic and Geometric Sequences

Flashcard
•
Mathematics
•
9th - 11th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is an arithmetic sequence?
Back
An arithmetic sequence is a sequence of numbers in which the difference between consecutive terms is constant.
2.
FLASHCARD QUESTION
Front
What is the formula for the nth term of an arithmetic sequence?
Back
The formula is a_n = a_1 + (n-1)d, where a_1 is the first term and d is the common difference.
3.
FLASHCARD QUESTION
Front
Given the sequence 6, 11, 16, 21, what is the common difference?
Back
The common difference is 5.
4.
FLASHCARD QUESTION
Front
How do you find the 25th term of an arithmetic sequence?
Back
Use the formula a_n = a_1 + (n-1)d. For a_1 = 5 and d = 0.5, a_25 = 5 + (25-1)0.5 = 17.
5.
FLASHCARD QUESTION
Front
What is a geometric sequence?
Back
A geometric sequence is a sequence of numbers where each term after the first is found by multiplying the previous term by a fixed, non-zero number called the common ratio.
6.
FLASHCARD QUESTION
Front
What is the formula for the nth term of a geometric sequence?
Back
The formula is a_n = a_1 * r^(n-1), where a_1 is the first term and r is the common ratio.
7.
FLASHCARD QUESTION
Front
Which type of sequence has a common difference?
Back
Arithmetic sequence.
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