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$$ Y_{lm}(\theta,\ \phi) =(i)^{m+|m|} \sqrt{{(2l+1)\over 4\pi}{(l - |m|)!\over (l+|m|)!}} \, P_{lm} (\cos{\theta}) \, e^{im\phi} $$
$$ R_{nl} (r) = \sqrt {{\left ( \frac{2 }{n a_{\mu}} \right ) }^3\frac{(n-l-1)!}{2n[(n+l)!]^3} } e^{- r / {n a_{\mu}}} \left ( \frac{2 r}{n a_{\mu}} \right )^{l} L_{n-l-1}^{2l+1} \left ( \frac{2 r}{n a_{\mu}} \right ) $$


IP属地:江苏35楼2015-05-31 10:08
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    $$ \sum $$


    IP属地:江苏36楼2015-05-31 10:10
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      \(\ e = \sum_{k=0}^{\infty} \frac{1}{k!} \)\


      IP属地:江苏37楼2015-05-31 10:29
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        IP属地:江苏38楼2015-05-31 10:41
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          $$ \zeta \left( z \right) = \sum\limits_{k = 1}^\infty {\frac{1}{{{k^z}}}} $$


          IP属地:江苏39楼2015-05-31 10:49
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            实验室制氧气 \({{\rm{H}}_{\rm{2}}}{{\rm{O}}_{\rm{2}}}\mathop { = = = }\limits^{{\rm{Mn}}{{\rm{O}}_{\rm{2}}}} {{\rm{H}}_{\rm{2}}}{\rm{O + }}{{\rm{O}}_{\rm{2}}} \uparrow \)


            IP属地:江苏40楼2015-05-31 10:58
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              实验室制氧气\({{\rm{H}}_{\rm{2}}}{{\rm{O}}_{\rm{2}}}\mathop { = = = = = }\limits^{{\rm{Mn}}{{\rm{O}}_{\rm{2}}}} {{\rm{H}}_{\rm{2}}}{\rm{O + }}{{\rm{O}}_{\rm{2}}} \uparrow \)


              IP属地:江苏41楼2015-05-31 11:00
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                如果\( \delta H > 0 \)反应放热,反之吸热


                IP属地:江苏42楼2015-05-31 15:14
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                  $$ \frac{1}{8} \left(8 \exp \left(-\left(\frac{2 \left| x\right| }{3}-1\right)^2-\frac{4 y^2}{9}-\frac{1}{3} \left(\frac{2 y}{3}+\frac{1}{2}\right)^3\right)+e^{-e \left(\left(\frac{2 \left| x\right| }{3}-1\right)^2+\frac{4 y^2}{9}\right)^2}+\frac{3}{2} e^{-e^{10} \left(\left(\frac{2 \left|
                  x\right| }{3}-1\right)^2+\frac{4 y^2}{9}\right)^2}-\frac{16 x^4}{81}+\frac{5 y}{3}\right) $$


                  IP属地:江苏43楼2015-06-01 19:31
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                    你线性代数学了没


                    IP属地:北京来自iPhone客户端44楼2015-06-05 17:53
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                      小吧主的我回复了就别和谐了


                      IP属地:北京来自iPhone客户端45楼2015-06-05 17:53
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                        IP属地:江苏49楼2015-06-21 13:45
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                          IP属地:江苏50楼2015-06-26 19:21
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                            IP属地:江苏51楼2015-06-26 19:42
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                              IP属地:江苏52楼2015-06-27 08:55
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