Sketch the graph of the ellipse \(\ds \frac{x^2}{9}+\frac{y^2}{16}=1\) and determine its foci. Let \(C\) be the conic which consists of all points \(P=(x,y)\) such ...
A multifocal metalens, which focuses incident light at multiple foci, has many applications in imaging systems and optical communications. However, the traditional design strategy of a multifocal ...
The America you see above is a proud country. Its northwestern border is arched like a subtly confident grin. The scrawl from Minnesota to Maine looks like a doctor's confident signature. East and ...
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