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ikram002p
Group Title
give an example for continues function but not differentiable
 7 months ago
 7 months ago
ikram002p Group Title
give an example for continues function but not differentiable
 7 months ago
 7 months ago

This Question is Closed

hartnn Group TitleBest ResponseYou've already chosen the best response.2
y= x it has "V" like shape, at x = 0 it is continuous , but not differentiable.
 7 months ago

ikram002p Group TitleBest ResponseYou've already chosen the best response.0
exactly...but how cud i find a function f(x,y) cont but not diff :)
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
differentiable has to do with limits, if the limits is not the same from all directions, the limit is undefined.
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
edit*** and the derivative of y=x is y' = x/x
 7 months ago

ikram002p Group TitleBest ResponseYou've already chosen the best response.0
in fact not necessary i mean if the limit exist its continues any way .. i wanna continues fun but not diff in f(x,y)
 7 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
means a 2 variable function example....hmm
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
i recall one function i was limiting, but it was an implicit i think
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
anything with a undefineable partial should suffice
 7 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
yeah, not sure about this, but try f(x,y) = xy
 7 months ago

ikram002p Group TitleBest ResponseYou've already chosen the best response.0
ok ill try
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
f = x+y1 :)
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
http://www.wolframalpha.com/input/?i=%28x%2By1%29%2F%28%7Cx%2By%7C1%29 heres a nice one
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
xy reminds me of one of those paper folded beaks ....
 7 months ago

ikram002p Group TitleBest ResponseYou've already chosen the best response.0
it sounds good but i have to check my txt book to use the definition to know if its not diff
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
im assuming "not differentiable" means that for some x in R, the derivative does not exist.
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
Derelict function comes to mind for some reason as well
 7 months ago

ikram002p Group TitleBest ResponseYou've already chosen the best response.0
yes its correct :) but the one u gave is also not continues there is a thm if the fun is diff then its continues ima give a counter example for the oposite situation like give an example for fun is cont but not diff
 7 months ago

ikram002p Group TitleBest ResponseYou've already chosen the best response.0
@hartnn gave a good example but one variable im gonna to check if xy is true
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
http://www.wolframalpha.com/input/?i=%7Csin%28x%2By%29%7C this one is rather nice looking to me
 7 months ago

sdfasfasdfasdfasdfafd Group TitleBest ResponseYou've already chosen the best response.0
im sorry for barging on your question ikram
 7 months ago

ikram002p Group TitleBest ResponseYou've already chosen the best response.0
it works !! both xy sin(x+y) thx both @hartnn @amistre64
 7 months ago

amistre64 Group TitleBest ResponseYou've already chosen the best response.1
good luck ;)
 7 months ago

hartnn Group TitleBest ResponseYou've already chosen the best response.2
cool :) welcome ^_^
 7 months ago
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