#spandel \def\c{\cos\theta} #spanend #spandel \def\s{\sin\theta} #spanend #spandel \def\cc{\cos^2\theta} #spanend #spandel \def\ss{\sin^2\theta} #spanend #spandel \def\c2{\cos2\theta} #spanend #spandel \def\s2{\sin2\theta} #spanend #spanadd \end{align*} #spanend #spanadd #spanend #spanadd \def\co{\cos\theta} #spanend #spanadd \def\so{\sin\theta} #spanend #spanadd \def\cco{\cos^2\theta} #spanend #spanadd \def\sso{\sin^2\theta} #spanend #spanadd \def\cdo{\cos2\theta} #spanend #spanadd \def\sdo{\sin2\theta} #spanend #spanadd #spanend #spanadd \def\ppr{\dfrac{\partial}{\partial r}} #spanend #spanadd \def\ppo{\dfrac{\partial}{\partial \theta}} #spanend #spanadd \def\pprr{\dfrac{\partial^2}{\partial r^2}} #spanend #spanadd \def\ppoo{\dfrac{\partial^2}{\partial \theta^2}} #spanend #spanadd \def\ppro{\dfrac{\partial^2}{\partial r \partial \theta}} #spanend #spanadd \def\ppor{\dfrac{\partial^2}{\partial \theta \partial r}} #spanend #spanadd #spanend #spanadd \def\ttt#1#2#3{\dfrac{#1}{#2}#3} #spanend #spanadd \def\btt#1#2{\left({#1#2}\right)} #spanend #spanadd \def\bttt#1#2#3{\left(\ttt#1#2#3\right)} #spanend #spanadd #spanend #spanadd \def\Ai{\co\ppr \btt\co\ppr - \co\ppr \bttt\so{r}\ppo - \ttt\so{r}\ppo \btt\co\ppr + \dfrac{\so}{r}\ppo \bttt\so{r}\ppo} #spanend #spanadd \def\Bi{\so\ppr \btt\so\ppr + \so\ppr \bttt\co{r}\ppo + \ttt\co{r}\ppo \btt\so\ppr + \dfrac{\co}{r}\ppo \bttt\co{r}\ppo} #spanend #spanadd #spanend #spanadd \def\Aii{\cco\pprr + \ttt\sdo{2r^2}\ppo - \ttt\sdo{2r}\ppro + \ttt \sso{r}\ppr - \ttt\sdo{2r}\ppor + \ttt\sdo{2r^2}\ppo + \ttt\sso{r^2}\ppoo} #spanend #spanadd \def\Bii{\sso\pprr + \ttt\sdo{2r^2}\ppo + \ttt\sdo{2r}\ppro + \dfrac1r \cco \ppr + \ttt\sdo{2r}\ppor - \ttt\sdo{2r^2}\ppo + \ttt\cco{r^2}\ppoo} #spanend #spanadd #spanend #spanadd \def\Aiii{\cco\pprr + \ttt\sso{r^2}\ppoo - \ttt\sdo{r}\ppro + \ttt\sso{r}\ppr + \ttt\sdo{r^2}\ppo} #spanend #spanadd \def\Biii{\sso\pprr + \ttt\cco{r^2}\ppoo + \ttt\sdo{r}\ppro + \ttt\cco{r}\ppr - \ttt\sdo{r^2}\ppo} #spanend #spanadd #spanend \begin{align*} &spandel;(\mathrn{I})&spanend; &spandel; &= \c \cc \c2&spanend; &spanadd;(\mathrm{I}) &= \Ai \\&= \Aii \\&= \Aiii \\&spanend; &spanadd;(\mathrm{II}) &= \Bi \\&= \Bii \\&= \Biii&spanend; #spanadd \end{align*} #spanend #spandel \end{align*} #spanend #spanadd \begin{align*} #spanend /home/limg/www/LimgMath/eq! You can't use `macro parameter character #' in math mode.
\displaystyle \mathstrut ##
spandel \def \c {\cos \theta } ##span...
l.16 ...sin2\theta} #spanend #spanadd \end{align*}
#spanend #spanadd #spanen...
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