1.

Q. If mth term of A.P is 1/n and the nth term is 1/m, then show that m*nth term is 1/2*[m*n+1]

Answer» am=a+(m-1)d1/n=a+(m-1)d.....(i)an=a+(n-1)d1/m=a+(n-1)d.......(ii)Subtracting (ii) from (i)1/n-1/m=(m-1-n+1)d(m-n)/mn=(m-n)dd=1/mn .....(iii) Put the value of d Rest do your self.?????????


Discussion

No Comment Found