If \( y=\log \left(x+\sqrt{x^{2}+a^{2}}\right) \), prove that \( \left(x^{2}+a^{2}\right) y_{2}+...
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0If \( y=\log \left(x+\sqrt{x^{2}+a^{2}}\right) \), prove that \( \left(x^{2}+a^{2}\right) y_{2}+x y_{1}=0 \)
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