dela
5b24eba3c8
- examples/subst-chain.tex: substitution walkthrough with \sdbox/\sdsubst/\sdstep - examples/antipatterns.tex: four compile-clean-but-teach-false figures - tests/invalid/step-outside-row.tex, empty-row.tex, undeclared-role.tex, two-contrast-pkg.tex: negative fixtures for package-level warnings - test.sh: add tests/invalid/ loop - build.sh: allow superderive-build: allow directive to suppress intentional warnings in antipatterns galleries - superderive.sty: \sdcol respects [en] option for illegal/legal labels - references/api.md: complete rewrite, all ~12 macros documented
24 lines
702 B
TeX
24 lines
702 B
TeX
% Golden example -- a subst chain that must be seen, not just aligned.
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% ../scripts/build.sh subst-chain.tex
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\documentclass[border=10pt]{standalone}
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\usepackage[cjk]{superderive}
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\sdsetrole{live}{sdTeal}
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\begin{document}
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\begin{tikzpicture}
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\sdstage{D1}{换元让积分内部对齐}
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\sdrow{R1}
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\sdbox[role=keep]{x}{$u$}
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\sdsubst[role=live]{s1}{u}{x^2}
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\sdstep[role=rewrite]{s2}{\int_0^1 x\,e^{x^2}\,dx}{\tfrac12\int_0^1 e^u\,du}
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\sdrowend
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\sdbbox{all}
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\sdtopformula{F}{$\int_0^1 x\,e^{x^2}\,dx = \tfrac12\int_0^1 e^u\,du$}
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\sdmeaningbox{mb}{120mm}{all}
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{换元是恒等改写，不改值}
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{令 $u=x^2$，则 $du=2x\,dx$}
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{上下限随 $u$ 一起换掉}
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\end{tikzpicture}
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\end{document}
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