这个页面用于练习TeX数学公式排版。
This is a¯ Page for¨ TEX testing⏟{\displaystyle {\boldsymbol {This}}\ {\overline {is\ a}}\ P^{age}\ fo{\ddot {r}}\ \underbrace {\mathrm {T_{E}X} \ {\mathfrak {testing}}} }
H2CO3 ===Δ H2O+CO2↑{\displaystyle \mathrm {H_{2}CO_{3}} \ {\overset {\Delta }{=\!=\!=}}\ \mathrm {H_{2}O} +\mathrm {CO_{2}} \uparrow }
这个算式对任意正整数n{\displaystyle n} 都成立: 1+1n2+1(n+1)2=n2(n+1)2+n2+(n+1)2n2(n+1)2=[n(n+1)]2+2n(n+1)+1[n(n+1)]2=(n2+n+1)2[n(n+1)]2=n2+n+1n(n+1)=1+1n(n+1){\displaystyle {\begin{aligned}{\sqrt {1+{\frac {1}{n^{2}}}+{\frac {1}{(n+1)^{2}}}}}&={\sqrt {\frac {n^{2}(n+1)^{2}+n^{2}+(n+1)^{2}}{n^{2}(n+1)^{2}}}}\\&={\sqrt {\frac {[n(n+1)]^{2}+2n(n+1)+1}{[n(n+1)]^{2}}}}\\&={\sqrt {\frac {(n^{2}+n+1)^{2}}{[n(n+1)]^{2}}}}\\&={\frac {n^{2}+n+1}{n(n+1)}}\\&=1+{\frac {1}{n(n+1)}}\end{aligned}}}
义勇军进行曲
1=G24{\displaystyle 1=\mathrm {G} \qquad {\tfrac {2}{4}}}
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