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Из оптического свойства коник легко вывести, что софокусные эллипс и гипербола перпендикулярны. Рассмотрим теперь пару эллипсов и пару гипербол с общими фокусами. Теорема Айвори утверждает, что диагонали образованного ими криволинейного прямоугольника равны.
Было бы интересно найти чисто геометрическое доказательство.
Из оптического свойства коник легко вывести, что софокусные эллипс и гипербола перпендикулярны. Рассмотрим теперь пару эллипсов и пару гипербол с общими фокусами. Теорема Айвори утверждает, что диагонали образованного ими криволинейного прямоугольника равны.
Было бы интересно найти чисто геометрическое доказательство.
That hurt tech stocks. For the past few weeks, the 10-year yield has traded between 1.72% and 2%, as traders moved into the bond for safety when Russia headlines were ugly—and out of it when headlines improved. Now, the yield is touching its pandemic-era high. If the yield breaks above that level, that could signal that it’s on a sustainable path higher. Higher long-dated bond yields make future profits less valuable—and many tech companies are valued on the basis of profits forecast for many years in the future. This provided opportunity to their linked entities to offload their shares at higher prices and make significant profits at the cost of unsuspecting retail investors. The perpetrators use various names to carry out the investment scams. They may also impersonate or clone licensed capital market intermediaries by using the names, logos, credentials, websites and other details of the legitimate entities to promote the illegal schemes. He said that since his platform does not have the capacity to check all channels, it may restrict some in Russia and Ukraine "for the duration of the conflict," but then reversed course hours later after many users complained that Telegram was an important source of information. "We're seeing really dramatic moves, and it's all really tied to Ukraine right now, and in a secondary way, in terms of interest rates," Octavio Marenzi, CEO of Opimas, told Yahoo Finance Live on Thursday. "This war in Ukraine is going to give the Fed the ammunition, the cover that it needs, to not raise interest rates too quickly. And I think Jay Powell is a very tepid sort of inflation fighter and he's not going to do as much as he needs to do to get that under control. And this seems like an excuse to kick the can further down the road still and not do too much too soon."
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