Question
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\( f\left(x^{3}-1\right)=x^{2}-x+2 \) duğuna göre \( f(7) \) kaçtır?

Ask by Higgins Lambert. in Turkey
Dec 26,2024

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Tutor-Verified Answer

Answer

\( f(7) = 4 \)

Solution

Verilen denklem: \[ f\left(x^{3}-1\right) = x^{2} - x + 2 \] \( f(7) \) değerini bulmak için \( x^3 - 1 = 7 \) eşitliğini sağlayan \( x \) değerini bulmamız gerekiyor: \[ x^{3} - 1 = 7 \] \[ x^{3} = 8 \] \[ x = 2 \] Şimdi \( x = 2 \) değerini orijinal denklemde yerine koyarak \( f(7) \)'yi hesaplayabiliriz: \[ f(7) = f(2^{3} - 1) = f(7) = 2^{2} - 2 + 2 = 4 - 2 + 2 = 4 \] **Sonuç olarak, \( f(7) = 4 \) olur.**

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The Deep Dive

Verilen denklemde \( f\left(x^{3}-1\right)=x^{2}-x+2 \) ifadesi var. Bu denklemin her iki tarafında \( x^{3}-1 \) ifadesinin hangi değere istediğimizle oynayabiliriz. Öncelikle, \( x^{3}-1 = 7 \) ifadesini çözmeliyiz. Bu ifadeden yola çıkarak: \[ x^{3} = 8 \implies x = 2 \] Şimdi \( x = 2 \) değerini verilen denklemde yerine koyarak \( f(7) \) değerini bulalım: \[ f(7) = f\left(2^{3}-1\right) = 2^{2}-2+2 \] Buradan, \[ f(7) = 4 - 2 + 2 = 4 \] Sonuç olarak: \[ f(7) = 4 \]

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