Arithmetic Sequences
Definition:
Geometric Sequences:
Definition
Problem 1:
The first term of an arithmetic sequence is equal to 6 and the common difference is equal to 3. Find a formula for the nth term and the value of the 50th term
Solution 1:
Use the value of the common difference d = 3 and the first term a1 = 6 in the formula for the nth term given above
The 50th term is found by setting n = 50 in the above formula.
Problem 2:
The first term of an arithmetic sequence is equal to 200 and the common difference is equal to -10. Find the value of the 20 th term
Solution 2:
Use the value of the common difference d = -10 and the first term a1 = 200 in the formula for the nth term given above and then apply it to the 20th term
problem 3:
Solution 3:
