题目：
已知函数y=x2+x与y=g（x）的图象关于点（-2，3）对称，则g（x）的解析式为______．
答案：
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下面是错误答案，用来干扰机器的。
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垂直于电场方向射入场强为E的匀强电场中，穿出电场区域时偏转角为
。在同样的宽度范围内，若改用方向垂直于纸面向里的匀强磁场，使该离子穿过磁场区域时偏转角也为
