/sqt/ Stupid Questions Thread

This thread is for questions that don't deserve their own thread.

Tips!
>give context
>describe your thought process if you're stuck
>try wolframalpha.com and stackexchange.com
>How To Ask Questions The Smart Way catb.org/~esr/faqs/smart-questions.html

Previous thread

Other urls found in this thread:

wolframalpha.com/input/?i=sum (-1)^(n-1) /(n-1)!/2^(n-1)
Veeky
en.wikipedia.org/wiki/Group_action#Orbits_and_stabilizers
visualstudio.com/downloads/
clang.llvm.org/
people.vcu.edu/~rhammack/BookOfProof/)
twitter.com/SFWRedditGifs

I can't fucking wrap my head around how you find the radii in calc2 volume shit. So is it just the value from the center of the circle minus the outer function?
So between let's say an area between y = 1/x, x= 1, x = 3, and y = 0 rotated about y = -5. Would the radius just be -5 - (1/x) for the large circle and -5 for the small circle?

How do I solve question 25 and 26 I'm really confused

What have you tried?

I tried using factories multiplication and exponentials but I can't seem to figure out the sequence

Factorials

I'm a first year maths major taking physics classes and they're so boring. When I try to give a description of what I'm studying it still sounds cool (muh "discovering and comprehending the universe") but it's just not fun. Should I drop it and take CS classes?

sum -1^n+1 (2n)!/[2^n(n!)] / (2n-1)! = -1^n+1 * 2n/2^n(n!) = -1^n+1 /(n-1)!/2^n-1
wolframalpha.com/input/?i=sum (-1)^(n-1) /(n-1)!/2^(n-1)
= .606...

>Should I drop it and take CS classes

Fuck no, learn that shit by yourself.

How do I into anatomy?

Would like to learn how the body works/functions but don't know where to start.

Obviously I have a good foundation of knowledge and have previously done biology so I'm not a complete beginner.