解方程 $$$10 x^{2} - 1 = 0$$$,求$$$x$$$(实根)
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在区间$$$\left(-\infty, \infty\right)$$$上求解关于$$$x$$$的方程$$$10 x^{2} - 1 = 0$$$。
答案
实根
$$$x = - \frac{\sqrt{10}}{10}\approx -0.316227766016838$$$A
$$$x = \frac{\sqrt{10}}{10}\approx 0.316227766016838$$$A
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