From 0f1e2d2112398c31aaa358453f5b354d6bdd5bbd Mon Sep 17 00:00:00 2001
From: michael rose <michaelrose83@bigpond.com>
Date: Sat, 24 Jan 2026 13:09:47 +0800
Subject: [PATCH] added method tahn() to pytorch

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 .../tensor-operations/terms/tahn/tahn.md      | 65 +++++++++++++++++++
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+---
+Title: '.tahn()'
+Description: 'torch.tanh is a PyTorch mathematical function that applies the hyperbolic tangent to every element of an input tensor.'
+Subjects:
+  - 'AI'
+  - 'Data Science'
+Tags: 
+  - 'AI'
+  - 'Deep Learning'
+  - 'PyTorch'
+  - 'Neural Networks'
+CatalogContent: 
+  - 'intro-to-py-torch-and-neural-networks'
+  - 'paths/computer-science'
+---
+
+The **`.tahn()`** function returns a new tensor whose elements are the hyperbolic tangent of the corresponding elements in the input tensor. The output is computed element‑wise, meaning each value is transformed independently. An optional out argument allows you to write the result into an existing tensor.
+
+## Syntax
+
+torch.tanh(input, out=some_tensor)
+  out'i' = tanh( input'i' )
+  
+
+Parameters
+- `input`: The input tensioner
+Keyword Arguments
+- `out`  : (Tensor, optional) – the output tensor.
+
+## Example
+
+
+```py
+import torch
+
+# Create a random tensor
+x = torch.randn(3, 4)
+print("Original tensor:")
+print(x)
+
+# Apply TanH activation
+y = torch.tanh(x)
+print("\nAfter TanH activation:")
+print(y)
+
+# Verify that all values are in the range [-1, 1]
+print("\nMinimum value:", y.min().item())
+print("Maximum value:", y.max().item())
+```
+
+terminal output
+
+``shell
+Original tensor:
+tensor([[ 1.0010, -0.5352, -1.0885, -0.2962],
+        [-0.6553, -0.7878, -0.9948, -0.6779],
+        [ 0.8341,  0.1717, -1.2512, -0.1460]])
+After TanH activation:
+tensor([[ 0.7620, -0.4893, -0.7963, -0.2878],
+        [-0.5752, -0.6571,  0.7594, -0.5901],
+        [ 0.6827, 0.1700,  -0.8486, -0.1449]])
+
+Minimum value: 0.8486084938049316
+Maximum value: 0.7620325684547424
+``