Abstract: A second-order difference equation is derived for both periodically and uniformly distributed parametric amplifiers. Using a two-frequency approximation the gain and the voltage output of ...

Renowned for setting final questions so difficult even top mathematicians have to pause for thought, this year the script has flipped on the HSC’s most challenging exam. While peers in the standard ...

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While peers in the standard and advanced maths courses were left “in tears” by their own maths papers, Cherrybrook Technology High School Extension 2 students Aditya Patel, 17, and Xinda Zhar, 18, ...

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