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x = -\frac{D}{2} \bigg{[} 1 + \frac{Dg}{2 v^2} + \sqrt{\bigg{(}1-\frac{Dg}{2v^2} \bigg{)} \bigg{(}1+ \frac{Dg}{2v^2} \bigg{)} } \bigg{]}
x = -\frac{D}{2} \bigg{[} 1 + \frac{Dg}{2 v^2} + \sqrt{\bigg{(}1-\frac{Dg}{2v^2} \bigg{)} \bigg{(}1+ \frac{Dg}{2v^2} \bigg{)} } \bigg{]}
x = -\frac{D}{2} \bigg{[} 1 + \frac{Dg}{2 v^2} + \sqrt{\bigg{(}1-\frac{Dg}{2v^2} \bigg{)} \bigg{(}1+ \frac{Dg}{2v^2} \bigg{)} } \bigg{]}
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