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Linear Algebra
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You are currently reading a thread in /sci/ - Science & Math

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Hey /sci/,

I am getting rekt in linear algebra right now. Give me all of your resources and tell me what I should do.
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>>7639885
Work through it until you understand it.
You are now a linear algebra master.
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>>7639885
But seriously, I don't know what to tell you besides work through problems, watch lectures online, etc. There are plenty of youtube lectures and sometimes a second perspective is what helps someone learn. Linear algebra is immensely useful and applicable, so it's worth learning well if you plan to continue in STEM.
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>>7639885
Holy shit, how?
eigenvalues?
You are fucked if you are struggling with simple matrices and row reduction
You should practice, look at cheat sheets/notes with examples
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You do know that TI-84s and 89s can solve matrices and linear variable problems.
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What's col A?
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>>7639885
You don't take the kernel of a matrix. wtf
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>>7640109
It's the span of the matrix
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>>7640109
>>7640983

I think the notation is for the column space, right?
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the math and concepts are super easy until eigenvalues. Thats where calc skills will come handy.
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>>7639885
Proofs till you understand it. That's the /sci/ way.
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>>7640120
Lol you do not understand matrices the . Matrices act as F linear maps and so it is natural to ask what is the kernel or nullspace of a matix is.
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>>7641206
[math]x \mapsto Ax[/math] is a map.

A is not.

You take the kernel of a map and the null space of a matrix. Terms are not interchangeable even if similar.
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People give KA a hard time, but I agree wholeheartedly with >>7641111 (nice quads btw) I would definitely recommend it to undergrad babbies.
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>>7641214
Nobody cares if you passed linear algebra last semester and you now have a godlike understanding of math and the universe. A matrix is a map and has a kernel which is the same as its null-space.