/sqt/ - Stupid Questions Thread: Contracting Homotopies Edition

just kidding I figured out what I had to do

>look at definition of linear transformation
>proceed

Brainlet here

How does the definite integral make your life easier in physics? I get calculating pi with a definite integral, but how it would be useful in a function of r, v or a over time doesn't click for me.

Nevermind, took 10 minutes to get it.

>>Dot notation is really always used for a derivative with respect to t.
source = undergraduate

now THAT was a stupid question

What is continuous map in topology and how maps work in topology space

preimage of open sets are open

We can define a number i such that i^2=-1.
What would it mean if we tried to define a number j such that j=1/0? Would it even make sense to do so?

assuming 0 is the number 0 in the reals.

division by zero is not defined in a field (the real numbers). So, no, it wouldn't make sense to do so.