What do the < > in the last line mean?
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What do the < > in the last line mean?
Produit scalaire dans l'espace des distributions
>>8087074
thanks friend
now if only i understand how to use it
>>8087089
un produit scalaire dans un espace de fonctions est l'integrale de leur produit, d'habitude
>>8087089
depends what course you're doing.
If it's engineering related, you only need to use this:
[math]\int \delta (t) f(t) dt = f(0) [/math]
If you're doing math, sometimes you might need to derive the distributional derivative of a function, and you have to use another property.
>>8087071
sometimes it means inner product
>>8087074
Omelette du fromage?
>>8087118
[math]\phi(t)[/math] is just any function of t in this case.
It seems like you're cramming though, enjoy failing your course :^)
>>8087118
phi is just like f, a test function. It's a dummy notation.
Basically what dirac does is it extracts the value of a function at a certain point. That's all.
It just happens to have other uses and properties, so we gave it a name.
soutien-gorge-quest
(bra-ket)