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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 220<br />

✬<br />

Jacobijeva determinanta je<br />

<br />

du ∂(u, v) ∂(u, v)<br />

det =det =det<br />

dx ∂(x, y) ∂(r, ϕ)<br />

in<br />

d 2 <br />

<br />

x= <br />

det <br />

dx <br />

d<br />

du<br />

2 <br />

<br />

u= <br />

det <br />

du<br />

dx<br />

✫<br />

−1 <br />

d 2 u= x<br />

Od tod zaključimo, da za neodvisni slučajni<br />

spremenljivki x in y, ki sta enakomerno<br />

porazdeljeni med 0 in 1, zgoraj definirani<br />

slučajni spremenljivki u in v pravtako<br />

neodvisni in porazdeljeni normalno.<br />

<br />

∂(r, ϕ)<br />

det =r<br />

∂(x, y)<br />

−2π<br />

rx<br />

2π d2u = e−u2 + v2 2<br />

2π<br />

Univerza v Ljubljani ▲<br />

❙ ▲<br />

▲<br />

= −2π<br />

x<br />

d 2 u.<br />

● ❙ ▲<br />

▲<br />

☛ ✖<br />

▲<br />

✩<br />

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