수학 문제를 해결하는 방법(비교)보기RAWBlame되돌리기비교r2 vs r3......22[math(N.t.:\ W.T.S.\implies E.T.S)]33[math(i.e.\ R.T.S.:\ pf\&sol)]44[math(c.f.:\ cond.;)]5[math(e.g.)\ def.\ A=B)]5[math(e.g.)\ def.\ A\eqqcolon B)]66[math(rmk.\ s.t.\ A=C)]77[math(Q.E.D.)]88......