Exercise 1 | Wiskunde op Tilburg University

Solve

$\;^5\!\log x^2 = \;^5\!\log 4$ .

Antwoord 1 correct

Fout

Antwoord 2 optie

The correct answer is not among the other options.

Antwoord 2 correct

Correct

Antwoord 3 optie

$x=2$

Antwoord 3 correct

Fout

Antwoord 4 optie

$x=65536$

Antwoord 4 correct

Fout

Antwoord 1 optie

$x=16$

Antwoord 1 feedback

Wrong: The solution to

$x^2=4$ is not

$16$ .

See Power functions.

Antwoord 2 feedback

Correct:

$\begin{align*} \;^5\!\log x^2 = \;^5\!\log 4 & \Leftrightarrow x^2=4\\ & \Leftrightarrow x=2 \mbox{ or } x=-2\\ \end{align*}$

Go on.

Antwoord 3 feedback

Wrong: What are the solutions to

$x^2=4$ ?

Try again.

Antwoord 4 feedback

Wrong:

$x\neq \sqrt{4^{16}}$ .

See Feature logarithmic functions