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golub

Euclidean distance

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Hi,
I can't do almost anything...

Write a function that calculates the Euclidean distance for points: eucl(q1,z1,r2,z2).
Calculate the distance of point pairs: (r1,z1), (r2,z2).

Date:

$r1=1; $z1=12; $r1=43; $z1=123;
$r1=3; $z1=112; $r1=43; $z1=54;

formula to the Euclidean distance: (r1,z1,r2,z2)=sqrt[(r1-z1)*(r1-z1) + (r2-z2)*(r2-z2)],
where sqrt = square root.

 

Can anyone help?

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5 minutes ago, golub said:

Can anyone help?

Yes, but what have you tried so far?

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Are you trying to learn the calculation (this is not a Math forum) or how to code it using PHP (this is a PHP forum)?

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Well, nothing... Php was such a faculty and were supposed to be simple tasks but this is some nightmare. 

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PHP was such a faculty?   What does that mean?

Am I hearing that you don't know how to program this using php at all and you are in a class to learn such?

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