Solution:
Let be the common difference of the A.P. |
Using and we get
Again using we get
Now,
Also, is independent of
Suppose are four real numbers and
Statement: If are in A.P. and then common difference of the A.P. is
Statement: If are in A.P., then is independent of
Let be the common difference of the A.P. |
Using and we get
Again using we get
Now,
Also, is independent of