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# Help with C3 past exam question! watch

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2. It may help to sketch the graph of y=|f(x)|.
If k<0 hen how many solutions are thee to |f(x)|=k?
3. (Original post by B_9710)
It may help to sketch the graph of y=|f(x)|.
If k<0 hen how many solutions are thee to |f(x)|=k?
umm... none?
4. (Original post by Stanspam)
umm... none?
True.

As B_9710 suggested, a sketch would be useful, even enlightening.

Two distinct roots to |f(x)| = k, implies that the line y=k would cut the curve |f(x)| in two separate places, hence a sketch would be useful.

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