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  2. For business economics
  3. Chapter 2: Differentiation of functions of one variable
  4. Applications 2: Elasticity and inverse
  5. Exercise 1

Exercise 1

Consider the demand function $D(p)$. It is know that $D(4)=3$. Furthermore, $\epsilon^D=-5$ at $p=4$. Determine $\epsilon^p$ at $D=3$.
$-\dfrac{1}{5}$
$5$.
$\dfrac{1}{5}$
$-5$
Consider the demand function $D(p)$. It is know that $D(4)=3$. Furthermore, $\epsilon^D=-5$ at $p=4$. Determine $\epsilon^p$ at $D=3$.
Antwoord 1 correct
Correct
Antwoord 2 optie
$5$.
Antwoord 2 correct
Fout
Antwoord 3 optie
$\dfrac{1}{5}$
Antwoord 3 correct
Fout
Antwoord 4 optie
$-5$
Antwoord 4 correct
Fout
Antwoord 1 optie
$-\dfrac{1}{5}$
Antwoord 1 feedback
Correct: $\epsilon^p=\frac{1}{\epsilon^D}=\frac{1}{-5}=-\frac{1}{5}$.

Go on.
Antwoord 2 feedback
Wrong: $\epsilon^p\neq -\epsilon^D$.

See Applications 2: Elasticity and inverse.
Antwoord 3 feedback
Wrong: $\epsilon^p\neq -\frac{1}{\epsilon^D}$.

See Applications 2: Elasticity and inverse.
Antwoord 4 feedback
Wrong: $\epsilon^p\neq \epsilon^D$.

See Applications 2: Elasticity and inverse.