PERGUNTA 3

Uma partícula eletricamente carregada se move sobre uma superfície metálica que tem a forma do gráfico da função f left parenthesis x comma y right parenthesis equals 3 x squared plus 7 y squared. Suponha que a parametrização da curva descrita pela partícula seja r left parenthesis t right parenthesis equals left parenthesis t squared comma t cubed plus 1 right parenthesis


Assinale a alternativa que apresenta a forma de se calcular a taxa de variação da partícula descrita acima.

a.
gamma apostrophe left parenthesis t right parenthesis equals 41 t to the power of 6 plus 13 t cubed plus 28 t.

b.
gamma apostrophe left parenthesis t right parenthesis equals 42 t to the power of 5 plus 12 t cubed plus 28 t.

c.
gamma apostrophe left parenthesis t right parenthesis equals 42 t to the power of 6 plus 12 t cubed plus 28 t.

d.
gamma apostrophe left parenthesis t right parenthesis equals 42 t to the power of 6 plus 13 t cubed plus 25 t.

e.
gamma apostrophe left parenthesis t right parenthesis equals 42 t to the power of 5 plus 12 t to the power of 4 plus 28 t.
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