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[數學,M1&M2] HKDSE Mathematics Question Review (2019-08-21)



HKDSE Mathematics Question Review (2019-08-21)

[隱藏]
This time we continue to talk about functions in DSE Level. Below is the intuitive illustration on inverse functions.
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Sample Question on Inverse Function

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Skills on Handling Periodic Functions

We have f(x+c).
Then we can plug f((x+c) +c) and so on.
Just elementary operations of functions.

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A Harder Problem on Inverse Function

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Annex: About Absolute Inequalities

[隱藏]
This is NOT an DSE-scope topic, but always appear in freshman Math courses. Below is the intuitive illustration.
general-graph-of-absolute-value-inequality-v2.png

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Applications to Absolute Inequalities

They are useful in determining domains of blended trigonometric functions
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= END =

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