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brendinha1217
@brendinha1217
October 2020
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Determine o domínio da função :
F(x) : 7x + 38
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Heberwagner
Para f(x) ≠ 0, o domínio será:
7x + 38 ≠ 0
7x ≠ -38
x ≠ -38/7
........................
Para f(x) ≥ 0, o domínio será:
7x + 38 ≥ 0
7x ≥ -38
x ≥ -38/7
..........................
x ≠ -38/7 ========>>>>> +++++++++++(-38/7)++++++++++++++
x ≥ -38/7 ========>>>>> --------------------(-38/7)++++++++++++++
x ≠ -38/7 ∩ x ≥ -38/7===>> --------------------(-38/7)++++++++++++++
D={ x∈IR / x ≥ -38/7}
<<<<==== DOMÍNIO
1 votes
Thanks 0
brendinha1217
eu preciso saber o domínio com diferente de zero e maior ou igual a zero não o gráfico
brendinha1217
ok obrigado
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Lista de comentários
7x + 38 ≠ 0
7x ≠ -38
x ≠ -38/7
........................
Para f(x) ≥ 0, o domínio será:
7x + 38 ≥ 0
7x ≥ -38
x ≥ -38/7
..........................
x ≠ -38/7 ========>>>>> +++++++++++(-38/7)++++++++++++++
x ≥ -38/7 ========>>>>> --------------------(-38/7)++++++++++++++
x ≠ -38/7 ∩ x ≥ -38/7===>> --------------------(-38/7)++++++++++++++
D={ x∈IR / x ≥ -38/7} <<<<==== DOMÍNIO