Question

A distribuição inicial de temperatura em certa barra de comprimento 20 cm e condutividade térmica igual a 2 é representada por uma função p dada por p left parenthesis x right parenthesis equals a x plus b. Considere p left parenthesis 1 right parenthesis equals 2 space e space p left parenthesis 5 right parenthesis equals 7.

Assinale a alternativa que apresenta a equação do calor associada, incluindo as condições de fronteira.
Escolha uma:
a. 7 u subscript x x end subscript equals u subscript tu left parenthesis x comma space 0 right parenthesis equals 5 over 4 x plus 3u left parenthesis 0 comma space t right parenthesis equals 4 over 3u left parenthesis 20 comma space t right parenthesis equals 103 over 4
b. 4 u subscript x x end subscript equals u subscript tu left parenthesis x comma space 0 right parenthesis equals 3 over 4 x plus 5 over 4u left parenthesis 0 comma space t right parenthesis equals 103 over 4u left parenthesis 20 comma space t right parenthesis equals 3 over 4
c. 5 u subscript x x end subscript equals u subscript tu left parenthesis x comma space 0 right parenthesis equals 2 x plus 7u left parenthesis 0 comma space t right parenthesis equals 2u left parenthesis 20 comma space t right parenthesis equals 7
d. 4 u subscript x x end subscript equals u subscript tu left parenthesis x comma space 0 right parenthesis equals 5 over 4 x plus 3 over 4u left parenthesis 0 comma space t right parenthesis equals 3 over 4u left parenthesis 20 comma space t right parenthesis equals 103 over 4
e. u subscript x x end subscript equals u subscript tu left parenthesis x comma space 0 right parenthesis equals 4 over 5 x plus 4 over 3u left parenthesis 0 comma space t right parenthesis equals 4 over 3u left parenthesis 20 comma space t right parenthesis equals 10 over 4

Answer 1

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Corrigido pelo AVA