Riley Ayala
10/03/2023 · Primary School
14. Find the derivative of the function by first expanding the expression. \[ f(x)=(9 x+7)^{2} \] \( f^{\prime}(x)=\square \) 15. Find \( f^{\prime}(x), f^{\prime \prime}(x) \), and \( f^{(3)}(x) \) for the following function.
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**السؤال 14:**
إذا كانت الدالة \( f(x) = (9x + 7)^2 \)، فيمكن توسيعها لتصبح:
\[
f(x) = 81x^2 + 126x + 49
\]
ثم المشتقة الأولى \( f^{\prime}(x) \) هي:
\[
f^{\prime}(x) = 162x + 126
\]
**السؤال 15:**
يرجى تقديم الدالة الكاملة لكي أتمكن من حساب المشتقات الأولى، الثانية، والثالثة لها.
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