The Difference Between a Margabola and a Parabola

 A parabola is a mirror-symmetric plane curve. It is approximately U-shaped, and is defined by several mathematical descriptions. But what is its exact shape? And how does it differ from a parabola? Let's explore these questions. This article will...

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What is QQ Online?

 QQ is an online chat service that has over 200 million accounts worldwide. At peak times, 176 million people can be online. The site is primarily popular among Chinese. However, there are a few benefits to international QQ, including a user interface...

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