math symbol?

[raven2k7]

hi , can someone please explain to me what that math symbol is called? where it says x= ? then some triangular shape. and what does it mean ? thanks . the photo is uploaded

 

[pka]

hi , can someone please explain to me what that math symbol is called? where it says x= ? then some triangular shape. and what does it mean ? thanks . the photo is uploadedView attachment 21874

Are you asking about: \(\Large x=\lambda,~~y=\mu,~~z=1-\lambda-\mu~?\)

 

[Harry_the_cat]

The symbol \(\displaystyle \lambda\) is the greek letter lambda.

 

[raven2k7]

oh so that means that it can be a constant of any value?

 

[Deleted member 4993]

oh so that means that it can be a constant of any value?

Or it can be a variable" like Θ - it is just a letter - a name.

 

[Dr.Peterson]

oh so that means that it can be a constant of any value?

It appears that both lambda and mu are being treated as parameters. You can think of each as an arbitrary constant in one sense, or as a variable in another sense.