diff --git a/source/linear-algebra/source/03-AT/03.ptx b/source/linear-algebra/source/03-AT/03.ptx
index 1e7430d39..b8b89ec56 100644
--- a/source/linear-algebra/source/03-AT/03.ptx
+++ b/source/linear-algebra/source/03-AT/03.ptx
@@ -824,21 +824,16 @@ Are the row space and column space of N both equal to \mathbb{R}^3Videos
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Video: The kernel and image of a linear transformation.
- Note that there is a typo: if you're following along, you should find that T\left(\left[\begin{array}{c}2\\1\\3\\0\end{array}\right]\right)=\left[\begin{array}{c}14\\-5\\9\end{array}\right].
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Video: The kernel and image of a linear transformation.
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Video: Finding a basis of the image of a linear transformation
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Video: Finding a basis of the kernel of a linear transformation
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Video: Finding a basis of the kernel and of the image of a linear transformation
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Video: The rank-nullity theorem
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diff --git a/source/linear-algebra/source/04-MX/03.ptx b/source/linear-algebra/source/04-MX/03.ptx
index 063bf2f20..eceaf3214 100644
--- a/source/linear-algebra/source/04-MX/03.ptx
+++ b/source/linear-algebra/source/04-MX/03.ptx
@@ -368,16 +368,10 @@ but where inputs and outputs are all given in \mathcal B-coordinates?
Videos
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