Ok.I cant think how to start either of these problems.

For each sequence, determine whether the sequence converges and if it does, find the limit.

a) (e^(npii))/1+3^n

b) sinh[(npii)/2]

a) I presuming that the dominant term is e, but when I divide by it I get

1/[(1/e^npii)+(3^n)/e^npii]

Is this the right way of doing it? If not can someone point me in the right direction.

b)For this one I had

sinh[(npii)/2]=(e^(npii/2) - e^(-npii/2))

I tired a way using the the triangle inequality followed by the squeeze rule, but that came out wrong, so I dont know where I went wrong.

If anyone could please, please help, I would be very grateful.

Thanx

Bex