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Determing whether an equation is linear

delgeezee

New member
May 24, 2013
9
Linear equations do not have roots of variables.
So why are a) and f) linear equations?

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Jameson

Administrator
Staff member
Jan 26, 2012
4,052
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