Function sub

sub(input, other, alpha?): Tensor
Calculates:
```
output = input - other * alpha
```
Gradient:
```
inputGrad = outputGrad; otherGrad = -outputGrad
```
Parameters
- input: Tensor
  
  the input tensor of any shape
- other: number | Tensor
  
  the other tensor whose shape is broadcastable with the input tensor
- Optional alpha: number
  
  the alpha value to multiply other with
Returns Tensor
the output tensor
- Defined in ops_opgen.ts:1057

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