Question

Show that a-b , a and a+b form consecutive term of an AP

Answer 1

If we take mean of (a - b) and (a+b) and equate it to a we get a= a which provea that a-b , a, a+b are consecutive terms of an AP

Answer 2

Answer:

Step-by-step explanation:

Three terms p, q and r are in A.P. if 2q = p + r.

Now, first term + third term = (a – b) + (a + b)

= 2a

= 2(second term)

Thus, (a – b), a and (a + b) are consecutive terms of an A.P.