# Course 2 week 2 question on the equation for Adam

**URL:** <https://community.deeplearning.ai/t/course-2-week-2-question-on-the-equation-for-adam/16183>\
**Category:** Improving Deep Neural Networks: Hyperparameter tun\
**Tags:** coursera-platform\
**Created:** [June 21, 2021, 5:58pm UTC](https://community.deeplearning.ai/t/course-2-week-2-question-on-the-equation-for-adam/16183 "2021-06-21T17:58:28Z")\
**Posts on this page:** 1\
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**Author:** ![Alienway](https://avatars.discourse-cdn.com/v4/letter/a/d26b3c/32.png) [@Alienway](https://community.deeplearning.ai/u/Alienway)\
**Post date:** [September 4, 2021, 5:34am UTC](https://community.deeplearning.ai/t/course-2-week-2-question-on-the-equation-for-adam/16183/4 "2021-09-04T05:34:30Z")

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Hi Nramon,

With reference to the lecture notes, Adam puts epsilon outside of the square root, while RMSProp puts it inside the root. Is there a specific reason for the different location?

Thanks!

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