Physics Forum » General Math
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Join in expert discussion on general maths topics that are not applicable to the specific categories. This includes topics that are usually high school math level.
Physics Forum » General Math
1d ago
Four points lie on the surface of a sphere. Given the six distances between the points, calculate the radius of the sphere.
This is (allegedly) an advanced high school level problem. However, it is a remembered problem, so it is possibly misremembered (i.e. there might have been some “bice...
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Physics Forum » General Math
1d ago
I OFTEN see ridiculous math statements in the public media, usually limited to such publications as Time Magazine and others of that ilk, and even more so on the Internet, but occasionally even in more serious media such as the NASA web site and The Economist. Just ran across another one on the...
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Physics Forum » General Math
4d ago
Hi,
How to convert 51065 foot pound per second to Newtons, not Newtons meter per second ..read more
Physics Forum » General Math
4d ago
The graph below shows a very clear, but not perfect, correlation between the red line and the blue line. That fact says nothing whatsoever about causality. BUT ... if you add in the additional fact that there is absolutely zero chance that the blue events cause the red events and a quite...
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Physics Forum » General Math
6d ago
I need a new calculator. I always wondered what the M buttons on a calculator were for, and today I finally got around to Googling for it. Pretty cool.
While watching videos explaining various calculator buttons, I found that some calculators have a 2nd button and a format button where you can...
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Physics Forum » General Math
6d ago
This answer shows an extended version of Pascal's Triangle that works for negative numbers too.
In This video, Sal shows how to interpret the members of Pascal's Triangle as the sum of all the possible paths to get to that member.
Is there any way we can use this same 'sum...
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Physics Forum » General Math
1w ago
I figure one can dig around for plenty of quality problems online, but I'm hoping to skip right to the good stuff by you posting your favorite real analysis problems from college, internet, textbook, dream, imagination, etc. It would be so helpful to get some comments this time, and please don't...
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Physics Forum » General Math
1w ago
Hello can anyone help me with this:
there are two sine rules for finding the direction of a resultant vector;one for the sides and one for the angle;
I tested both formulas and they all worked well and gave me equal answers, does that mean I can use them interchangeably,the rules are:
a/sinA =...
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Physics Forum » General Math
1w ago
Since, percentages are fractions and fractions are a comparison of a part to whole. Then, how is this statement--> A is what percent more than B, a part to whole comparison ?
Also a part to whole comparison involves only one quantity (the whole) which is distributed into equal parts and we talk...
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