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Title: Injectivity, Surjectivity for Square Matrices
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Series: Linear Algebra
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Chapter: Matrices and linear systems
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YouTube-Title: Linear Algebra 30 | Injectivity, Surjectivity for Square Matrices
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Bright video: https://youtu.be/r3RVsfgZOZo
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Dark video: https://youtu.be/MxTh_FMkKHE
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Quiz: Test your knowledge
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Dark-PDF: Download PDF version of the dark video
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Print-PDF: Download printable PDF version
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Thumbnail (bright): Download PNG
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Thumbnail (dark): Download PNG
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Subtitle on GitHub: la30_sub_eng.srt missing
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Timestamps (n/a)
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Subtitle in English (n/a)
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Quiz Content
Q1: Is the map $f_A$ induced by the matrix $A = \begin{pmatrix} 1 & 0 \ 0 & 2 \end{pmatrix}$ bijective?
A1: Yes, it is!
A2: No, only surjective.
A3: No, only injective.
A4: One needs more information.
Q2: Is the map $f_A$ induced by the matrix $A = \begin{pmatrix} 1 & 0 \ 0 & 0 \end{pmatrix}$ bijective?
A1: No, it’s neither surjective nor injective.
A2: No, it’s not surjective but injective.
A3: No, it’s not injective but surjective.
A4: One needs more information.
A5: Yes, it is.
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Last update: 2024-10
