Q.The function $f(x)=\begin{cases} \frac{\sqrt{1+px}-\sqrt{1-px}}{\sqrt{1+x}-\sqrt{1-x}} & |x|<1 \ p & |x|=1 \end{cases}$ is continuous for all real $p$ if $p$ equals

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Q.The function f(x)={1+px−1−px1+x−1−x∣x∣<1 p∣x∣=1f(x)=\begin{cases} \frac{\sqrt{1+px}-\sqrt{1-px}}{\sqrt{1+x}-\sqrt{1-x}} & |x|<1 \ p & |x|=1 \end{cases}f(x)={1+x​−1−x​1+px​−1−px​​​∣x∣<1 p​∣x∣=1​ is continuous for all real ppp if ppp equals