Math Is Fun Forum

Hi harrychess

Hi phro

Ah, I see. Missed that one. Thanks! That makes 46 largest so far.

Then, by the same logic, you would not even need Postulate 4.

That's how I'm understanding it.

Hi guys, wouldn't it be better if there was a 20 instead of a 19 there? You can then get up to 47.

It has no sequels.

Hi  bobbym

There is only one movie.

Well, I'm guessing it's because without the Postulate 4, you wouldn't actually be able to use Common Notion 1, because you don't know if two right angles is equal to two right angles.

Yeah.

Ah, found it.

Hi nikarika_kumar

Look at the graph of a parabola which is always positive.

Notice that it cannot have any intersection with the x-axis. If it did, there would be points where it is 0 and/or negative, which we don't want.

So, this leads us to conclude that, because the parabola has no intersections with the x-axis,

Also, another thing we need to notice is the orientation of the parabola. If it has no solutions and is upside down from the picture above, it will always be negative:

So, we need the parabola to be turned like in the first picture. That will happen when

That's all there is to it.

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