Question

Write the expression for the common difference of an A.P. whose first term is a and nth term is b.

Answer 1

Answer:

Step-by-step explanation:

Since ,

a= first term and Tn = b

Tn= a + (n-1)d

Therefore,

b = a + (n-1)d

b - a = (n-1)d

b-a/ n- 1= d

Hence common difference, d, is

b-a/n-1

:)