/sci/ - Science & Math

[Anonymous No.9609975]

What is the meaning of dx?

[Anonymous No.9609982]

>>9609975
Differential x

[Anonymous No.9609985]

>>9609982
How can I obtain the value for dx?

[Anonymous No.9610744]

>>9609985
it's infinitesimally small

[Anonymous No.9610746]

>>9609985
it's just 1 lol

[Anonymous No.9610751]

>>9609985
d = 4, x = 24, dx = 424

[Anonymous No.9610815]

>>9609975
An infinitesimally small change in X

[Anonymous No.9610820]

>>9609985
dx would the same as delta x. dy is the change in y of your llinear approximation, so it can be different than delta y, dy = f'(x)dx

[Anonymous No.9610879]

it's just a metaphor

[Anonymous No.9610901]

>>9609975
Idiots misunderstanding bad notation.
Unless this is the context of differential geometry, in which case it is more acceptable bad notation.

[Anonymous No.9610915]

>>9609975
Daily reminder that infinitesimals are heresy and [math]1-0.999...=0[/math].

[Anonymous No.9610933]

Fuck off, there is no meaning. It's not a mysterious infintesimal number or whatever, this is a lie "calculus" teachers tell to please the brainlets

[Anonymous No.9610944]

>>9609975

[Anonymous No.9610952]

Depend on the context, if you are talking about the [math]dx[/math] in [math] \int f(x) dx[/math], it is simply there to tell you the variable you are integrating.
If you are calculating of the differential of a function [math] f [/math] , let say a function of 2 variable, then [math] df(x,y)=\frac{\partial f}{\partial x}(x,y) dx + \frac{\partial f}{\partial y} (x,y) dy[/math], then the dx and dy are map defined as : [math] dx(h,k)=h]/math] and [math]dy(h,k)=k[/math]
Is standard analysis, there is no such thing are infinitesimal change or whatever

[Anonymous No.9610994]

A differential form. All the brainlets saying hurr durr infinitely small should kys themselves

[Anonymous No.9612362]

it is a very small difference in x, so it is the same as delta x, but with the limit of xf -> xi
in the end, it does not have much numerical value, just algebrical and analytical, you can't calculate a value for it, trying to evaluating the limit gives you 0, and in many times it will be used as a variable

[Anonymous No.9612647]

>>9609975
There's no red button on the real version of that meme, yours is wrong op.

[Anonymous No.9612650]

Leibniz notation is cancer

[Anonymous No.9612652]

>>9609975
it's a hugely small difference

[Anonymous No.9612690]

>>9609975
I forgot about this meme

[Anonymous No.9612696]

dx is a placeholder for the statement "with respect to delta x, as it gets closer to zero". there's no depth to this. it's like f(x) meaning "the function at the value x". it's all shorthand stuff because mathematicians are too weak willed to write long winded statements and concatenate everything.

[Anonymous No.9612799]

in differential geometry (or just advanced calculus) it's a differential form
in basic calculus it's just notation and/or some handwaving bullshit

[Anonymous No.9614422]

>>9610744
>>9610815
>>9610820
>>9612362
>>9612652
>engineering and science students in charge of pure mathematics

[Anonymous No.9614455]

>>9609985
Something about epsilon and delta or something I dunno lolol just ignore all the dumb proof bits.

[Anonymous No.9614618]

>>9610744
>>9610933
>>9610944
>>9612799
>>9614422
>>9614455