If x has shape (samples, dim) and n is 2, the output will have shape (samples, 2, dim).

`k_repeat(x, n)`

A tensor

- x
Tensor or variable.

- n
Integer, number of times to repeat.

This function is part of a set of Keras backend functions that enable lower level access to the core operations of the backend tensor engine (e.g. TensorFlow, CNTK, Theano, etc.).

You can see a list of all available backend functions here: https://tensorflow.rstudio.com/reference/keras/index.html#backend.