# Search results

1. ### Determine a basis for kernel/nullspace

Homework Statement [/B] A=##\begin{bmatrix} 1 & 2 & 3 \\ 4 & 8 & 12 \end{bmatrix}## Question: Determine a basis for ker(A). Homework Equations Ker(A)=##\begin{bmatrix} 1 & 2 & 3& |&0 \\ 4 & 8 & 12& |&0 \end{bmatrix}## (And reduce with gaussian elimination) The Attempt at a Solution (Sorry...
2. ### Calculus Recommendation of a thorough book on suffix/index notation?

I believe it is also called "einstein notation"? The "notation-thingy" using kronecker delta, levi-civita and etc to simplify expressions with div, grad, curl (i took the course in my native language so i am not entirely sure what the notation or technique is called in english). Looking to get...
3. ### Courses Multiple physics and maths courses at the same time?

So we are to choose electives (this is all undergrad) for the spring in about a month or so, and i am having doubts if i might end up taking one "math heavy" or "concept heavy" course too many. My uni splits one semester into two periods, meaning the spring semester is based on two periods...
4. ### What sparked your interest for physics?

For me it was something as trivial as a conceptual example of newtons third law, the astronaut creating momentum by tossing a wrench, that gave me an eyeopener for the subject. What ignited your spark?