Message in #general · Kappa⁴ Archive

legorhin Sep 14, 2016 11:30 PM general

but your math classes will pretend you can't unless you go into mathematics or electrical/computer engineering

Rex Bot Sep 14, 2016 11:30 PM general

"explain why you can not use substitution to find the limit" lim of rad(x-2) as x approaches -2

legorhin Sep 14, 2016 11:31 PM general

the implicit scope of your class is to deal with only real numbers

legorhin Sep 14, 2016 11:32 PM general

"forget" about i until later

Rex Bot Sep 14, 2016 11:32 PM general

but

Rex Bot Sep 14, 2016 11:32 PM general

we learned that in algebra

Rex Bot Sep 14, 2016 11:32 PM general

I dont afraid of no is

legorhin Sep 14, 2016 11:33 PM general

you are nowhere near the level of math that will actually be finding limits in the complex domain

Rex Bot Sep 14, 2016 11:33 PM general

oh

legorhin Sep 14, 2016 11:33 PM general

or doing complex calculus

Rex Bot Sep 14, 2016 11:33 PM general

we just call that "undefined"

Rex Bot Sep 14, 2016 11:33 PM general

so we dont give no shits about no is

Rex Bot Sep 14, 2016 11:34 PM general

checked the answer key

legorhin Sep 14, 2016 11:35 PM general

what is rad(x)?

Rex Bot Sep 14, 2016 11:36 PM general

(x)^(1/2)

legorhin Sep 14, 2016 11:36 PM general

sqrt...

Rex Bot Sep 14, 2016 11:36 PM general

oh

Rex Bot Sep 14, 2016 11:36 PM general

yeah

Rex Bot Sep 14, 2016 11:36 PM general

that isnt really descriptive

legorhin Sep 14, 2016 11:36 PM general

rad could be a couple things

Rex Bot Sep 14, 2016 11:36 PM general

idk where I thought of that

Rex Bot Sep 14, 2016 11:36 PM general

yeah it really could be

Rex Bot Sep 14, 2016 11:39 PM general

what is it called when you get 0/0 through substitution?

legorhin Sep 14, 2016 11:42 PM general

L'Hospital's rule?

Rex Bot Sep 14, 2016 11:42 PM general

ok google L'Hospital's rule

Google BOT Sep 14, 2016 11:42 PM general

http://tutorial.math.lamar.edu/Classes/CalcI/LHospitalsRule.aspx

Rex Bot Sep 14, 2016 11:43 PM general

indeterminate form

Rex Bot Sep 15, 2016 12:04 AM general

so (sin(x))/(-2(3.14...)</=x<0) does not work in my calculator

Rex Bot Sep 15, 2016 12:04 AM general

rip

Rex Bot Sep 15, 2016 12:04 AM general

how would I go about doing this @legorhin

legorhin Sep 15, 2016 12:05 AM general

what?

Rex Bot Sep 15, 2016 12:05 AM general

essentially what I am trying to do is limit the function to (-2(3.14...)</=x<0)

legorhin Sep 15, 2016 12:06 AM general

what is </=

Rex Bot Sep 15, 2016 12:06 AM general

(sin(x))/(x<0) works

Rex Bot Sep 15, 2016 12:06 AM general

that is less than or equal to

legorhin Sep 15, 2016 12:06 AM general

<= is the programmers way of showing that

Rex Bot Sep 15, 2016 12:06 AM general

ok

Rex Bot Sep 15, 2016 12:07 AM general

is it >= or =>

Rex Bot Sep 15, 2016 12:07 AM general

out of curiosity

legorhin Sep 15, 2016 12:07 AM general

>=

legorhin Sep 15, 2016 12:08 AM general

double character operators with = in them almost always end with it

Rex Bot Sep 15, 2016 12:08 AM general

anyway

Rex Bot Sep 15, 2016 12:08 AM general

how would I do that

legorhin Sep 15, 2016 12:09 AM general

sin(x)/2π <= x < 0

legorhin Sep 15, 2016 12:09 AM general

sin(x) <= 2πx < 0

Rex Bot Sep 15, 2016 12:11 AM general

well

Rex Bot Sep 15, 2016 12:11 AM general

the first one does not show up at all

Dan K. Meme Sep 15, 2016 12:11 AM general

rip

legorhin Sep 15, 2016 12:12 AM general

sin(x)/x <= 2π < 0

legorhin Sep 15, 2016 12:12 AM general

disproven

legorhin Sep 15, 2016 12:12 AM general

sinc(x) <= 2π < 0

legorhin Sep 15, 2016 12:13 AM general

though 2π == 0 in some cases

Rex Bot Sep 15, 2016 12:13 AM general

well I guess I need a new mouse mat

Rex Bot Sep 15, 2016 12:13 AM general

my cursor keeps drifting and apparently it is my old one

Rex Bot Sep 15, 2016 12:14 AM general

it works better on hardwood with random gaps in it than on a mat lol

Rex Bot Sep 15, 2016 12:14 AM general

but leg I have no idea what you are trying to get me to do

legorhin Sep 15, 2016 12:15 AM general

its signal processing stuff

legorhin Sep 15, 2016 12:15 AM general

i don't know what you are trying to do either

Rex Bot Sep 15, 2016 12:15 AM general

well

Rex Bot Sep 15, 2016 12:15 AM general

I am an idiot

Rex Bot Sep 15, 2016 12:16 AM general

who does not explain things when asking for help

Rex Bot Sep 15, 2016 12:16 AM general

god fucking damn it

legorhin Sep 15, 2016 12:16 AM general

since x has to be less than 0, you can divide the sin by x without worrying about illegal division

Rex Bot Sep 15, 2016 12:16 AM general

graph this (sin(x))/(-2(3.14...)<=x<0)

Rex Bot Sep 15, 2016 12:16 AM general

also

Rex Bot Sep 15, 2016 12:16 AM general

the division thing

Rex Bot Sep 15, 2016 12:16 AM general

I dont know what that works

legorhin Sep 15, 2016 12:16 AM general

-2π?

Rex Bot Sep 15, 2016 12:16 AM general

I just learned it tioday lol

Rex Bot Sep 15, 2016 12:16 AM general

yes

Rex Bot Sep 15, 2016 12:16 AM general

I got lazy and didnt feel like finding pi

legorhin Sep 15, 2016 12:17 AM general

-(1/2π) sin(x) <= x < 0

Rex Bot Sep 15, 2016 12:18 AM general

http://www.razerzone.com/gaming-mouse-mats umbreon help me pick out an overpiriced mat for my overpriced mouse

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legorhin Sep 15, 2016 12:18 AM general

plot all 3 functions and find the place where x is valid for all of them

Rex Bot Sep 15, 2016 12:18 AM general

still have no idea leg

Rex Bot Sep 15, 2016 12:19 AM general

its just supposed to be sinx restricted to -2(pi)<=x<0

legorhin Sep 15, 2016 12:19 AM general

plot both -(1/2π) sin(x) and x

legorhin Sep 15, 2016 12:20 AM general

and find the x values that make -(1/2π) sin(x) less than or equal to x

Rex Bot Sep 15, 2016 12:20 AM general

I mean

legorhin Sep 15, 2016 12:20 AM general

then color that area in

Rex Bot Sep 15, 2016 12:21 AM general

I can plot (sin(x))/(x<0)

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