function selu_(x) {
	  var $x = convertToTensor(x, 'x', 'selu');
	  var inputs = {
	    x: $x
	  };
	  return ENGINE.runKernel(Selu, inputs);
	}
Computes scaled exponential linear element-wise.

`x < 0 ? scale * alpha * (exp(x) - 1) : x`

```js
const x = tf.tensor1d([-1, 2, -3, 4]);

x.selu().print();  // or tf.selu(x)
```
@param x The input tensor.

@doc {heading: 'Operations', subheading: 'Basic math'}