Question

A corollary to the Schwarz lemma gives when functions are constrained to multiply inputs by values in this set. For 10 points each:
[10h] Name this set that is the image of the function “f-of-x equals e to the i x,” for x in the real numbers.
ANSWER: unit circle [prompt on circle]
[10e] This function of theta equals the length of the vertical side of a right triangle with angle theta and vertices on the origin, horizontal axis, and unit circle. This function equals “opposite over hypotenuse.”
ANSWER: sine [or sin]
[10m] The Schwarz lemma follows from a “principle” named for the modulus with this property. The function “sine-of-theta” has this property only when theta equals pi-over-two plus an integer multiple of two pi.
ANSWER: maximum [accept local maximum; accept word forms in place of “maximum,” like “maxima,” “maximal,” or “maximized”; prompt on answers describing the function being equal to one]
<David Bass, Science - Math&gt; ~22125~ &lt;Editor: David Bass>

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