A relação entre u1 e u2 é:&nbsp;&nbsp;<img id="latex-89" src="https://cdn.mesalva.com/uploads/image/MjAxOS0xMi0xMCAwMzozOToyMiArMDAwMDUxNDAzMg%3D%3D%0A.png" data-latex="u_1=%5Cdfrac%7B2%7D%7B3%7Du_2" data-size="1">

<img id="latex-145" src="https://cdn.mesalva.com/uploads/image/MjAxOS0xMi0xMCAwMzozOToyMiArMDAwMDUyOTE5Ng%3D%3D%0A.png" data-latex="u=2%5Cbold%7Bi%7D+8%5Cbold%7Bj%7D" data-size="1">&nbsp;pode ser o vetor unitário.

<img id="latex-484" src="https://cdn.mesalva.com/uploads/image/MjAxOS0xMi0xMCAwMzozOToyMiArMDAwMDc1OTc4NA%3D%3D%0A.png" data-latex="u=2%5Cbold%7Bi%7D+6%5Cbold%7Bj%7D" data-size="1">&nbsp;pode ser o vetor unitário.

A relação entre u1 e u2 é:&nbsp;<img id="latex-465" src="https://cdn.mesalva.com/uploads/image/MjAxOS0xMi0xMCAwMzozOToyMiArMDAwMDgxNDQ2Mw%3D%3D%0A.png" data-latex="u_1=%5Cdfrac%7B1%7D%7B3%7Du_2" data-size="1">

Engenharia

Sendo f(x,y) dado abaixo, assinale a alternativa correta sabendo que&nbsp;<img id="latex-328" src="https://cdn.mesalva.com/uploads/image/MjAxOS0xMi0xMCAwMzozOToyMSArMDAwMDc2OTc1OA%3D%3D%0A.png" data-latex="D_uf(2,3)=0" data-size="1">:<img id="latex-629" src="https://cdn.mesalva.com/uploads/image/MjAxOS0xMi0xMCAwMzozOToyMiArMDAwMDIxMzg5Ng%3D%3D%0A.png" data-latex="f(x,y)=%5Cdfrac%7By%7D%7Bx+y%7D" data-size="1">Adaptado de Anton Vol. 2, 8ed Seção: 14.6 exercício 26

Questão

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