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Calculus, 2ADV C1 2023 HSC 7 MC v1

It is given that  \(y=f(g(x))\), where  \(f(2)=5\), \(f^{′}(2)=3\), \(g(4)=2\)  and  \(g^{′}(4)=-2\).

What is the value of \(y^{′}\) at  \(x=4\)?

  1. \(-6\)
  2. \(-2\)
  3. \(3\)
  4. \(6\)
Show Answers Only

\(A\)

Show Worked Solution
\(y\) \(=f(g(x))\)  
\(y^{′}\) \(=f^{′}(g(4)) \times g^{′}(4)\)  
  \(=f^{′}(2) \times -2\)  
  \(=3 \times -2\)  
  \(=-6\)  

 
\(\Rightarrow A\)

Filed Under: Standard Differentiation (Adv-X) Tagged With: Band 5, eo-derivative (HSC), smc-1069-45-Composite functions

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