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Apr
22
comment The functional equation and differentiability
@kmitov also $f(0)=1$ is possible
Apr
22
answered Solve for $\alpha$: $P = \frac{1}{\sigma}\displaystyle\int_{0}^{\alpha} \exp (\frac{ -2 x^{\beta}}{\sigma} ) dx$
Apr
22
comment compute probability density function of a bivariate function without sampling
@kensaii indeed this is a convolution. If you cannot solve for one in terms of the other, this is not really usable.
Apr
22
answered compute probability density function of a bivariate function without sampling
Apr
21
comment compute probability density function of a bivariate function without sampling
why not condition on $X_2$?
Apr
21
comment compute probability density function of a bivariate function without sampling
what do you know of the relationship between $X_1,X_2$? E.g. if they are independent, $g(x_1, x_2) = f_{X_1}(x_1) \times f_{X_2}(x_2)$...
Apr
21
revised Let $(X, Y )$ be a random pair with the density $f(x,y) = c(y-x)^2, 0<x<y<1$ and $0, elsewhere$ for some constant $c > 0$.
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Apr
20
comment Let $(X, Y )$ be a random pair with the density $f(x,y) = c(y-x)^2, 0<x<y<1$ and $0, elsewhere$ for some constant $c > 0$.
@Slae no :) the upper limit should be constant, otherwise your integral ends up as a function of $y$. Why don't you draw the region to figure out which value to pick?
Apr
20
answered Let $(X, Y )$ be a random pair with the density $f(x,y) = c(y-x)^2, 0<x<y<1$ and $0, elsewhere$ for some constant $c > 0$.
Apr
20
revised Kernel and Image of a map
added 160 characters in body; edited title
Apr
20
reviewed Approve Looking for a Function With Certain Characteristics
Apr
15
comment Optimization question related to calculus.
@almagest sorry fixed
Apr
15
revised Optimization question related to calculus.
edited body
Apr
15
answered Optimization question related to calculus.
Apr
15
revised Optimization question related to calculus.
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Apr
15
revised Finding the area under the given parameters
added 10 characters in body; edited tags
Apr
15
revised Definition of matrix transformation
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Apr
15
comment Definition of matrix transformation
i think so :) that's indeed a common definition
Apr
14
revised Is $\mathrm{span}\{v_1,v_2,v_3\}=\mathrm{span}\{v_1+v_2,v_1+v_3,v_2+v_3\}$ if $v_1,v_2,v_3\in V$ a vector space over $\mathbb{Z}_2$?
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Apr
14
reviewed Approve Is $\mathrm{span}\{v_1,v_2,v_3\}=\mathrm{span}\{v_1+v_2,v_1+v_3,v_2+v_3\}$ if $v_1,v_2,v_3\in V$ a vector space over $\mathbb{Z}_2$?