Question

4. In an A.P. if mih term is n and term is m, where m. find the term is m, where m=/n
​

Answer 1

Answer:

hello dear,

am = a+ (m-1)d = n ................(1)

an = a+(n-1)d = m ..............(2)

on substracting 1 and 2 ,

a +(m-1) d - a - (n-1)d = n -m

(m - 1 - n +1) d = n -m

(m-n) d = n-m

d = - (m-n) / m-n = -1

in equation 1 ,

a+(m-1)(-1) = n

a - m +1 = n

a = n+m -1

ap = a+(p-1)d

= n +m - 1 + (p-1)(-1)

= n+m -1 -p +1

= n+m -p

i hope its help you :-)