Question

\[ f(x) = 3x + 4 \quad g(x) = 2x - 3 \] \[ \text{ابحث عن: } f \circ g(x) \]

Ask by Bowman Mcguire. in Egypt
Mar 15,2025

Upstudy AI Solution

Tutor-Verified Answer

Answer

\( f \circ g(x) = 6x - 5 \)

Solution

1. نبدأ بتطبيق التعريف التراكبي للتوابع: \[ f \circ g(x) = f(g(x)) \] 2. نعوض عن \( g(x) \) في \( f(x) \): \[ f(g(x)) = f(2x-3) = 3(2x-3) + 4 \] 3. نقوم بتوزيع \( 3 \) على داخل القوس: \[ 3(2x-3) = 6x - 9 \] 4. نجمع الحد الثابت: \[ 6x - 9 + 4 = 6x - 5 \] 5. يكون الناتج: \[ f \circ g(x) = 6x - 5 \]

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Beyond the Answer

لإيجاد الناتج \( f \circ g(x) \) نحتاج إلى إدخال دالة \( g(x) \) في دالة \( f(x) \). أولاً، نحسب \( g(x) \): \[ g(x) = 2x - 3 \] الآن، ندخل \( g(x) \) في \( f(x) \): \[ f(g(x)) = f(2x - 3) = 3(2x - 3) + 4 \] نقوم بحساب القيم: \[ = 6x - 9 + 4 \] \[ = 6x - 5 \] إذًا، الناتج هو: \[ f \circ g(x) = 6x - 5 \]

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