Extending n-dimensional Tensors

I have tensors t1 and t2 respectively with same size and dimensions. I would want tx to extend t1 and then t2.

t1 = torch.Tensor([[5, 2], [6, 3], [7, 9]])
t2 = torch.Tensor([[4, 5], [1, 4], [3, 8]])

And I would want tensors tx to be like

>> tensor([5, 2], [6, 3], [7, 9], [[4, 5], [1, 4], [3, 8])

Does tensors supports me to do this? If so, then how?

I am guessing this should be
tensor([[5, 2], [6, 3], [7, 9], [4, 5], [1, 4], [3, 8]])

In that case, you can use:

tx=torch.cat([t1,t2],dim=0)