# Week 3 assignment: bug in the test

**URL:** <https://community.deeplearning.ai/t/week-3-assignment-bug-in-the-test/4396>\
**Category:** Neural Networks and Deep Learning\
**Tags:** coursera-platform\
**Created:** [May 10, 2021, 6:23am UTC](https://community.deeplearning.ai/t/week-3-assignment-bug-in-the-test/4396 "2021-05-10T06:23:48Z")\
**Posts on this page:** 1\
**Showing post:** 51

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**Author:** ![paulinpaloalto](https://sea1.discourse-cdn.com/dlai/user_avatar/community.deeplearning.ai/paulinpaloalto/32/187_2.png) [@paulinpaloalto](https://community.deeplearning.ai/u/paulinpaloalto)\
**Post date:** [May 16, 2022, 4:56am UTC](https://community.deeplearning.ai/t/week-3-assignment-bug-in-the-test/4396/51 "2022-05-16T04:56:37Z")

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There is no transpose in the Week 3 forward propagation formula. Look again at the instructions or at the lectures. That is only in the Week 2 Logistic Regression case.

[Here is a recent thread](https://community.deeplearning.ai/t/cant-understand-a-matrix/125234/2) which goes through the derivation of the shape of the W matrices in Week 3.

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