次の集合の部分集合をすべて書きだそう。
【解答】
\newcommand\colNS[2]{\color{#1}#2\color{black}} \newcommand\colUL[2]{\textcolor{#1}{\underline{\color{black}#2}}} \newcommand\colMM[2]{\color{#1}\scriptsize #2\color{black}} \newcommand\colBX[2]{\colorbox{#1}{#2}} \newcommand\colFR[2]{\textcolor{#1}{\fbox{\color{black}#2}}} \newcommand\colFB[2]{\textcolor{#1}{\fbox{\scriptsize\bf\color{#1}#2}}} \begin{align*} & \colFB{red}{要素2個の部分集合}\\ & \left\{1,\ 2\right\}\\ \\ & \colFB{red}{要素1個の部分集合}\\ & \left\{\ 1\ \right\}\\ & \left\{\ 2\ \right\}\\ \\ & \colFB{red}{要素0個の部分集合}\\ & \varnothing\\ \\ \end{align*} %1 orange,bisque %2 green,palegreen %3 magenta, violet %4 deepskyblue, lightcyan
【解答】
\newcommand\colNS[2]{\color{#1}#2\color{black}} \newcommand\colUL[2]{\textcolor{#1}{\underline{\color{black}#2}}} \newcommand\colMM[2]{\color{#1}\scriptsize #2\color{black}} \newcommand\colBX[2]{\colorbox{#1}{#2}} \newcommand\colFR[2]{\textcolor{#1}{\fbox{\color{black}#2}}} \newcommand\colFB[2]{\textcolor{#1}{\fbox{\scriptsize\bf\color{#1}#2}}} \begin{align*} & \colFB{red}{要素3個の部分集合}\\ & \left\{1,\ 2,\ 3\right\} \colMM{red}{\cdots A \subset A}\\ \\ & \colFB{red}{要素2個の部分集合}\\ & \left\{1,\ 2\right\} \colMM{red}{\cdots 2つずつ組み合わせる}\\ & \left\{2,\ 3\right\} \colMM{red}{ {}_{3}{\rm C}_{2}=3\ 通り}\\ & \left\{1,\ 3\right\}\\ \\ & \colFB{red}{要素1個の部分集合}\\ & \left\{\ 1\ \right\} \colMM{red}{\cdots 1つずつ}\\ & \left\{\ 2\ \right\}\\ & \left\{\ 3\ \right\}\\ \\ & \colFB{red}{要素0個の部分集合}\\ & \varnothing\\ \\ \end{align*} %1 orange,bisque %2 green,palegreen %3 magenta, violet %4 deepskyblue, lightcyan
【解答】
\newcommand\colNS[2]{\color{#1}#2\color{black}} \newcommand\colUL[2]{\textcolor{#1}{\underline{\color{black}#2}}} \newcommand\colMM[2]{\color{#1}\scriptsize #2\color{black}} \newcommand\colBX[2]{\colorbox{#1}{#2}} \newcommand\colFR[2]{\textcolor{#1}{\fbox{\color{black}#2}}} \newcommand\colFB[2]{\textcolor{#1}{\fbox{\scriptsize\bf\color{#1}#2}}} \begin{align*} & \colFB{red}{要素2個の部分集合}\\ & \left\{a,\ b\right\}\\ \\ & \colFB{red}{要素1個の部分集合}\\ & \left\{\ a\ \right\}\\ & \left\{\ b\ \right\}\\ \\ & \colFB{red}{要素0個の部分集合}\\ & \varnothing\\ \\ \end{align*} %1 orange,bisque %2 green,palegreen %3 magenta, violet %4 deepskyblue, lightcyan
【解答】
\newcommand\colNS[2]{\color{#1}#2\color{black}} \newcommand\colUL[2]{\textcolor{#1}{\underline{\color{black}#2}}} \newcommand\colMM[2]{\color{#1}\scriptsize #2\color{black}} \newcommand\colBX[2]{\colorbox{#1}{#2}} \newcommand\colFR[2]{\textcolor{#1}{\fbox{\color{black}#2}}} \newcommand\colFB[2]{\textcolor{#1}{\fbox{\scriptsize\bf\color{#1}#2}}} \begin{align*} & \colFB{red}{要素3個の部分集合}\\ & \left\{a,\ b,\ c\right\} \colMM{red}{\cdots A \subset A}\\ \\ & \colFB{red}{要素2個の部分集合}\\ & \left\{a,\ b\right\} \colMM{red}{\cdots 2つずつ組み合わせる}\\ & \left\{b,\ c\right\} \colMM{red}{ {}_{3}{\rm C}_{2}=3\ 通り}\\ & \left\{a,\ c\right\}\\ \\ & \colFB{red}{要素1個の部分集合}\\ & \left\{\ a\ \right\} \colMM{red}{\cdots 1つずつ}\\ & \left\{\ b\ \right\}\\ & \left\{\ c\ \right\}\\ \\ & \colFB{red}{要素0個の部分集合}\\ & \varnothing\\ \\ \end{align*} %1 orange,bisque %2 green,palegreen %3 magenta, violet %4 deepskyblue, lightcyan