freeCodeCamp/curriculum/challenges/english/11-machine-learning-with-python/tensorflow/neural-networks-activation-functions.md

---
id: 5e8f2f13c4cdbe86b5c72d93
title: 'Neural Networks: Activation Functions'
challengeType: 11
videoId: S45tqW6BqRs
---

## Description

<section id='description'>
</section>

## Tests

<section id='tests'>

```yml
question:
  text: |
    Which activation function switches values between -1 and 1?
  answers:
    - |
      ReLU (Rectified Linear Unit)
    - |
      Tanh (Hyperbolic Tangent)
    - |
      Sigmoid
  solution: 2
```

</section>