Question

pls answer my question...from AP.​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer:

am=1/n, an=1/m

So, a+(m-1)d=1/n_____________(1)

a+(n-1)d=1/m_____________(2)

subsrititing equation (1) by(2) we get

d=1/mn

a=1/mn

yet 'A'be the mnth term of Ap

a+(mn-1)d=1/mn+1+(-1/nm)=-1

Hence proved.☺

hope it helps you.