Need help with Physics/Maths.

[werto165]

Okay, I'm trying to derive the equation for centripetal acceleration. Thus far I have this for the x component: acceleration= second differential of position vector. 

 

I'm just confused to how I differentiate -r.dθ/dt.(Sin(θ)) any help would be appreciated. 

[Aircooled Brain]

My brain just hit the fan.This looks like some witchcraft.

[GodSpoon]

Uhhhhhhhhhhhhhh

Not quite sure whats going on entirely, probably shouldn't shitpost

[vigorstick]

Did you try restarting it?

[Nineshadow]

My brain just hit the fan.This looks like some witchcraft.

You don't wanna see how trig looks like then.

Or anything more "sophisticated" .

[mansoor_]

one moment

.....

[werto165]

with respect to t?

yeah

[Beskamir]

I actually somewhat get what's going on but considering I've got a 70ish % (scaled) in calculus AP right now I doubt I can be of much use to you.

[Nineshadow]

yeah

What's dθ?

[werto165]

What's dθ?

well I differentiated with respect to t using the chain rule for dr/dt(cosθ) dθ is the small change in angle I think.

[mikat]

im glad my math homework looks like this: 3x(x-2)=2 what is x, please answer btw im very confused

[mansoor_]

You could use the liebniz rule, or just think of it as the product rule with one of two product being a double product itself. 

  https://i.imgur.com/SgB60cg.png

[mansoor_]

newtons differentiation notation is usually more convenient in these situations. 

(trying to make the best of an accidental dp)

[werto165]

im glad my math homework looks like this: 3x(x-2)=2 what is x, please answer btw im very confused

x = 3+sqrt(15)/3 or x = 3-sqrt(15)/3

[werto165]

newtons differentiation notation is usually more convenient in these situations. 

(trying to make the best of an accidental dp)

I've never come across that notation, seems a lot cleaner... Thanks  

[werto165]

You could use the liebniz rule, or just think of it as the product rule with one of two product being a double product itself. 

  https://i.imgur.com/SgB60cg.png

So in general terms it would be like this? 

 

 

 

[mansoor_]

So in general terms it would be like this? 

 

 

 

Yep.

[mikat]

someone needs to write a program where i just hold my webcam up to my math book and it sees the text, understands the exercise and draws the answers with a pencil with a robot arm into my notebook. my gpu has a couple of teraflops, should be enough

[werto165]

someone needs to write a program where i just hold my webcam up to my math book and it sees the text, understands the exercise and draws the answers with a pencil with a robot arm into my notebook. my gpu has a couple of teraflops, should be enough

this? https://photomath.net/en/

[Art Vandelay]

this? https://photomath.net/en/

Can't do matrices 

 

 

 

 

seriously, matrices are the most annoying thing to try to type out on your phone into octave/wolframalpha, etc.

[werto165]

Can't do matrices 

 

1424281895108.gif

 

 

 

seriously, matrices are the most annoying thing to try to type out on your phone into octave/wolframalpha, etc.

Depending on what you're doing with a matrix there's cyanogen mod calculator that's pretty good for matrices: 

https://play.google.com/store/apps/details?id=com.android2.calculator3&hl=en_GB