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<pl-question-panel>
<p>
Find the derivative of
</p>
<p>
$\qquad {{params.f}}$
</p>
<p>
with respect to ${{params.x}}$:
</p>
</pl-question-panel>
$\qquad\dfrac{df(x)}{dx}$ = <pl-symbolic-input answers-name="df" variables="{{params.x}}"></pl-symbolic-input>