Question

Esboce o gráfico da função f(x)= x^2+2x-3
(-3,-2,-1,0,1,2,3)

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Answer 1

Vamos lá

Formula: f ( X ) = X² + 6X - 3

Calculo:

f ( - 1 ) = ( - 1 )² + 6 ( - 1 ) - 3

f ( - 1 ) = 1 - 6 - 3

f ( - 1 ) = - 5 - 3

f ( - 1 ) = - 8

f ( 0 ) = 0² + 6 ( 0 ) - 3

f ( 0 ) = 0 + 0 - 3

f ( 0 ) = - 3

f ( 1 ) = 1² + 6 ( 1 ) - 3

f ( 1 ) = 1 + 6 - 3

f ( 1 ) = 7 - 3

f ( 1 ) = 4

f ( 2 ) = 2² + 6 ( 2 ) - 3

f ( 2 ) = 4 + 12 - 3

f ( 2 ) = 16 - 3

f ( 2 ) = 13

f ( 3 ) = 3² + 6 ( 3 ) - 3

f ( 3 ) = 9 + 18 - 3

f ( 3 ) = 27 - 3

f ( 3 ) = 24

f ( 4 ) = 4² + 6 ( 4 ) - 3

f ( 4 ) = 16 + 24 - 3

f ( 4 ) = 40 - 3

f ( 4 ) = 37