Let \[f(x)=\left\{ \begin{align} & {{x}^{2}}+k,\ \ \ \ \text{when}\ \ x\ge 0 \\ & -{{x}^{2}}-k,\ \ \text{when }x

Let \[f(x)=\left\{ \begin{align} & {{x}^{2}}+k,\ \ \ \ \text{when}\ \

1.	Let \[f(x)=\left\{ \begin{align} & {{x}^{2}}+k,\ \ \ \ \text{when}\ \ x\ge 0 \\ & -{{x}^{2}}-k,\ \ \text{when }x
A.	0
B.	1
C.	2
D.	?2
Answer» B. 1

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Let \[f(x)=\left\{ \begin{align} & {{x}^{2}}+k,\ \ \ \ \text{when}\ \ x\ge 0 \\ & -{{x}^{2}}-k,\ \ \text{when }x

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