Linear Algebra

>>7639885
Buy Quantum Mechanics by Cohen-Tannoudji.
Work through it until you understand it.
You are now a linear algebra master.

>>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.

>>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

You do know that TI-84s and 89s can solve matrices and linear variable problems.

What's col A?

>>7639885
You don't take the kernel of a matrix. wtf

>>7640109
It's the span of the matrix

>>7640109
>>7640983

I think the notation is for the column space, right?

Try khankademy
the math and concepts are super easy until eigenvalues. Thats where calc skills will come handy.

>>7639885
Proofs till you understand it. That's the /sci/ way.

>>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.

>>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.

People give KA a hard time, but I agree wholeheartedly with >>7641111 (nice quads btw) I would definitely recommend it to undergrad babbies.

>>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.