i need help with these problems coz my maths teacher has my book i dont know wat 2 do so cud u plz explain and show me how 2 do it. thanks muchly

*1 write an expression for the nth term of the sequence:

1/3 , 2/5 , 3/7 , 4,9 , 5/11 ..............

*2 the nth term is n/n^2+1

the 1st term in the sequence is 1/2

what are the next 3 terms?