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Raja99 Group TitleBest ResponseYou've already chosen the best response.0
in a simplified form
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
what do you mean?
 2 years ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
\(x \times x\) I think that's what you mean.
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
mathematical form?
 2 years ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
Hmm. Similarly: \( \color{Black}{\Rightarrow x^3 = x \times x\times x}\) \( \color{Black}{\Rightarrow x^4 = x \times x \times x \times x}\)
 2 years ago

ParthKohli Group TitleBest ResponseYou've already chosen the best response.0
'Mathematical form' is still ambiguous.
 2 years ago

Raja99 Group TitleBest ResponseYou've already chosen the best response.0
some stats people know may know
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
\[\langle x^2\rangle =\sum\limits_{j=0}^\infty x^2 P(j)\]
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
\[\int 2xdx\]
 2 years ago

Aryang Group TitleBest ResponseYou've already chosen the best response.0
this reminds me of a very fundamental/basic question in calculus..please see my next question..i'll post link..
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
\[\frac{d}{dx} (\frac{x^3}{3})\]
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
what are you doing at @lgbasallote ,
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
\[x^2 = r^2  y^2\]
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
trying to get all that's x^2 and see if anythign suits him
 2 years ago

Aryang Group TitleBest ResponseYou've already chosen the best response.0
http://openstudy.com/study?login#/updates/4ffffc85e4b0848ddd64e880
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
im pretty sure i have provided the answer to the question
 2 years ago

lgbasallote Group TitleBest ResponseYou've already chosen the best response.0
we all think that...
 2 years ago

Raja99 Group TitleBest ResponseYou've already chosen the best response.0
i need E(x^2)=?
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
the expectiation value of \(x\) \[\langle x\rangle =E(x)\]
 2 years ago

Raja99 Group TitleBest ResponseYou've already chosen the best response.0
@UnkleRhaukus yes but x^2
 2 years ago

lalaly Group TitleBest ResponseYou've already chosen the best response.4
\[Var(x)=E(x^2)(E(x))^2\]
 2 years ago

Raja99 Group TitleBest ResponseYou've already chosen the best response.0
i got the ans... thanks all
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
\[\sigma_x=\langle x^2\rangle\langle x\rangle ^2\]
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
The expectation value , or expect value of a function is \[\langle f(x)\rangle =\sum\limits_{x=0}^\infty f(x)P(x)\] where \(P(x)\) is the probability of x
 2 years ago

Raja99 Group TitleBest ResponseYou've already chosen the best response.0
yes for a discrete random variable
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
im not sure why i put j instead of x,
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
oh, you want a continuous function?
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
\[\langle f(x)\rangle=\int\limits_{\infty}^\infty f(x)\rho(x)\text dx\]
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
where \(\rho(x)\) is the probability density
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
so \[\langle x^2\rangle=\int\limits_{\infty}^\infty x^2\rho(x)\text dx\]
 2 years ago

Raja99 Group TitleBest ResponseYou've already chosen the best response.0
@UnkleRhaukus small question the E(constant) is a constant right
 2 years ago

UnkleRhaukus Group TitleBest ResponseYou've already chosen the best response.2
if the distribution of the variable \(x\) is constant , yes
 2 years ago
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