Question

Dada a funçao afim F(x) =2x +3,determine os valores de x para que :

A) f(1x)=1 B) f(x)=o C) f(x)=1/3

Answer 1

F(x) =2x +3,determine os valores de x para que :

A) f(1x)=1 ==> 2x + 3 = 1 ==> 2x = 1 -3 ==> 2x = - 2 ==> x = - 1
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B) f(x)=0 ==> 2x + 3 = 0 ==> 2x = - 3 ==>x = - 3/2
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C) f(x)=1/3 ==> 2x + 3 = 1/3 ==> 6x + 3 = 1

6x = 1 - 3 ==> 6x = - 2 ==> x = -2/6