Graph f(x)=-x^2-1,x<0; x^2+1,x>=0

$f (x) = {\begin{cases} - x^{2} - 1, x < 0 \\ x^{2} + 1, x \geq 0 \end{cases}$

Graph.

$f (x) = {\begin{cases} - x^{2} - 1 & x < 0 \\ x^{2} + 1 & x \geq 0 \end{cases}$

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