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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 219<br />

✬<br />

Zgled:<br />

Naj bo<br />

✫<br />

Ω = {(x, y) | 0 < x ≤ 1, 0 < y ≤ 1}.<br />

r = −2 log(x), ϕ = 2πy,<br />

u = r cos ϕ, v = r <strong>si</strong>n ϕ.<br />

Potem po pravilu za odvajanje posrednih funkcij in definiciji Jacobijeve<br />

matrike velja<br />

∂(u, v)<br />

∂(x, y) =<br />

⎛<br />

⎞ ⎛ ⎞<br />

<br />

−1<br />

∂(u, v) ∂(r, ϕ) cos ϕ −r <strong>si</strong>n ϕ 0<br />

= ⎝ ⎠ ⎝ rx ⎠ .<br />

∂(r, ϕ) ∂(x, y) <strong>si</strong>n ϕ r cos ϕ 0 2π<br />

Univerza v Ljubljani ▲<br />

❙ ▲<br />

▲<br />

● ❙ ▲<br />

▲<br />

☛ ✖<br />

▲<br />

✩<br />

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