I need help approaching this question,
any help will be much appreciated.
Assume that a linear system exists over $\Bbb{R}$ so that its solution group is: $$S=\{(a,a^2,b)|a,b \in \Bbb{R}\}$$ Prove that system is homogenic
I need help approaching this question,
any help will be much appreciated.
Assume that a linear system exists over $\Bbb{R}$ so that its solution group is: $$S=\{(a,a^2,b)|a,b \in \Bbb{R}\}$$ Prove that system is homogenic
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No linear homogeneous system can have a set of solutions $S$ of this form.
Indeed the solution set of a homogeneous linear system is a vector space, in particular is stable by scalar multiplication.
But, here is a counterexample: taking $a=b=1$, $(1,1,1) \in S$ whereas its double $2*(1,1,1)=(2,2,2) \notin S$ because the second coordinate isn't the square of the first one.