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    Can someone please help me with part iii) of this question?
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    It may help to sketch the graph of y=|f(x)|.
    If k<0 hen how many solutions are thee to |f(x)|=k?
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    (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?
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    (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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