SOLUTION: Given progression, m-1, 2m, 3m+1, 4m+2,... determine; 1. Common difference 2. 20th term 3. The value of m, hence give the numerical values of the 1st three terms Thanks

Algebra ->  Formulas -> SOLUTION: Given progression, m-1, 2m, 3m+1, 4m+2,... determine; 1. Common difference 2. 20th term 3. The value of m, hence give the numerical values of the 1st three terms Thanks      Log On


   

Question 1029294: Given progression, m-1, 2m, 3m+1, 4m+2,... determine;
1. Common difference
2. 20th term
3. The value of m, hence give the numerical values of the 1st three terms
Thanks
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
d=2m-%28m-1%29
d=2m-m%2B1
d=m%2B1
.
.
a%5Bn%5D=m-1%2B%28n-1%29%28m%2B1%29
a%5B1%5D=m-1
a%5B2%5D=m-1%2Bm%2B1=2m
a%5B3%5D=m-1%2B2m%2B2=3m%2B1
a%5B4%5D=m-1%2B3m%2B3=4m%2B2
.
.
a%5B20%5D=m-1%2B%2820-1%29%28m%2B1%29
a%5B20%5D=m-1%2B19m%2B19
a%5B20%5D=20m%2B18
.
.
Without knowing another piece of information, you cannot get numerical values.