A figura abaixo mostra um sistema de cabos para suportar uma carga de 500 kg. Considerando que o sistema esteja em equilíbrio assinale a alternativa que corresponde às forças de tração nos cabos AB, AC e AD. Adote g = 10 m/s2

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Ответ:

sickomode2048

10.02.2020

Engineering

ANSWER

$(f\circ g)(x)=7 {x}^{2} - 9$

EXPLANATION

It was given that;

f(x) = 7x - 9

and

$g(x) = {x}^{2}$

We want to find an expression for the composition function;

$(f\circ g)(x)=f(g(x))$

$(f\circ g)(x)=f( {x}^{2} )$

We substitute x² into f(x)=7x-9

This will give us:

$(f\circ g)(x)=7 {x}^{2} - 9$

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