MHB Determing whether an equation is linear

  • Thread starter Thread starter delgeezee
  • Start date Start date
  • Tags Tags
    Linear
delgeezee
Messages
12
Reaction score
0
Linear equations do not have roots of variables.
So why are a) and f) linear equations?

View attachment 849
 

Attachments

  • 8585510c-bf12-4168-9673-611d658f7806_zps9accb5fd.jpg
    8585510c-bf12-4168-9673-611d658f7806_zps9accb5fd.jpg
    11 KB · Views: 81
Physics news on Phys.org
Hi delgeezee, (Wave)

Welcome to MHB! :)

I agree that if (a) contains $-\sqrt{2x_3}$ then it isn't a linear equation. Perhaps it is a typo and it should be $-\sqrt{2} \hspace{1 mm} x_3$?

Jameson
 
The world of 2\times 2 complex matrices is very colorful. They form a Banach-algebra, they act on spinors, they contain the quaternions, SU(2), su(2), SL(2,\mathbb C), sl(2,\mathbb C). Furthermore, with the determinant as Euclidean or pseudo-Euclidean norm, isu(2) is a 3-dimensional Euclidean space, \mathbb RI\oplus isu(2) is a Minkowski space with signature (1,3), i\mathbb RI\oplus su(2) is a Minkowski space with signature (3,1), SU(2) is the double cover of SO(3), sl(2,\mathbb C) is the...
Back
Top