Hey

Not sure if this belongs in the calculus section but I didn't know where else to put it and it came from a calculus question anyways.

For

$\displaystyle \left|y \right|=a \left|x^3\right|$

does this imply that

$\displaystyle a\geq0$

Because the left hand side must be non-negative, and $\displaystyle \left|x^3\right|$ must be non-negative, shouldn't a also be non-negative, otherwise you end up with a negative equals a positive?