/sci/ - Science & Math

Hi guys, so i have to show that the function f(x,y)=xy/(x^2 +y^2) with f(0,0)=0 is continuous, has partial derivatives at(0,0) but it is not differentiable at that point. I have no problem showing that it the partial derivatives at that point, but im not exactly sure how to show its not differentiable. Any ideas?

http://lmgtfy.com/?q=equivalence+principle

>>5125875
>2012
>thinking QM only has a shitty position operator
ISHYGDDT

>>5078292
>tries to apply shitty statistical mechanics concepts to quantum gravity
LMFAO

>>4793577
>>4793629
>>4793565
>>4793647
>>4793651

>>4777505
Is your mouth always full of cum?

>>4765781
ARe you mentally ill?

>>4762140
STFU AND GTFO!

>>4695838
>>4695838
>engineer
>qunatum mechanics

NOPE. NOT GONNA FUCKING HAPPEN!
You are not smart enought to do quantum mechanics

\thread

>>4600061
>glen beck

He is a complete fucking moron.

>>4374465

>>4207508
>doesn't know what the "Higgs Field" even means
>calls it bullshit

When you actually know the standard model, and QTF, then you get to fucking speak. Until then you have no fucking idea what you are talking about.

>>3868591

>>3736141
>all tha claims of people who have seen aliens prove aliens exist

OHH MY FUCKING GOD, I NEVER KNEW THERE WERE PEOPLE INCAPABLE OF LIES!
AWESOME! HOW DID THEY GET THIS WAY?
WHY DON'T WE PUT THESE PEOPLES TALENTS TO USE?

>>3671158
Would proving Santa Clause exists create a paradox?

Also, HOW THE FUCK DO YOU PROVE THAT A FAIRYTALE CHARACTER LIKE GOD OR SANTA EXISTS? YOU ARE FUCKING RETARDED!

>>3280987
>weigh in on
>wedding photographer's theory of gravity

Fuck no. IGNORE THE BLATHERINGS OF DUMBFUCKS! THEY ARE JUST A FUCKIN WASTE OF TIME!

>>3160602
ITT: A shitty engineer want to be a real scientist

If I had a nickel everytime I heard a story like this, I would be rich.

Sorry to burst your bubble but:\
YOU ARE AN ENGINEER, YOU CANNOT SCIENCE. YOU DON'T KNOW HOW TO SCIENCE, YOU ARE NOT GOOD AT SCIENCE, YOU ARE NOT SMART ENOUGH FOR SCIENCE.

If you were smart enough to be a scienist, you would have been a fucking scientist.

Right now, you are basically saying that you work at McDonalds, but wish to be a real chef. The fact that you work at McDonalds doesn't really help you bro. If you want to be a chef, you still need to go back for more schooling, etc.

\thread

>>3145010
Yes, we have growing demands. This is a fact, we have to deal with. There is no getting past it.

Are you even trying to make a point? Just stating the obvious?

>>3011539
Wow Op. Just Wow.

>>2965318
>>2965259
Just wow

>>2944168

>>2853505
OP stated a invention (physical), not an idea for an invention.

>>2741086
>>2741085
>>2741115
WOW

>>2700818
Troll?