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Slika - Shrani.si

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A. Juriˇ<strong>si</strong>ć in V. Batagelj: Verjetnostni račun in statistika 191<br />

✬<br />

✫<br />

... Dvojni integral<br />

predstavlja prostornino pod ploskvijo.<br />

Naj bo funkcija z = f(x, y) ≥ 0 zvezna na nekem območju R v ravnini R 2<br />

(npr. kar [a, b] × [c, d]).<br />

Ploˇsčina telesa med ploskvijo z = f(x, y), in ravnino z = 0 je enaka<br />

dvojnemu integralu<br />

<br />

f(x, y) dxdy,<br />

R<br />

ki ga izračunamo s pomočjo dvakratnega integrala<br />

<br />

d b<br />

<br />

b d<br />

<br />

f(x, y) dx dy = f(x, y) dy dx.<br />

c<br />

a<br />

Univerza v Ljubljani ▲<br />

❙ ▲<br />

▲<br />

a<br />

c<br />

▲<br />

● ❙ ▲<br />

▲<br />

☛ ✖<br />

✩<br />

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