첨부파일의

label명령 중에서 \frac{}{}을 하면 에러가 납니다.

어떻게 하면 치료할 수 있는지요

현답을 기다리며 미리 인사드립니다. 꾸벅.

(PS) *.mp 파일이 업로드가 안되서 복사하였습니다.

verbatimtex

\input kotexutf.tex

etex;

%input metafun

def nowsize = %------------ currentpicture size grid ------------------------------

save ulcor, llcor, urcor, lrcor; pair ulcor, llcor, urcor, lrcor;

ulcor = ulcorner currentpicture;

llcor = llcorner currentpicture;

urcor = urcorner currentpicture;

lrcor = lrcorner currentpicture;

for i=0 upto (ceiling((xpart urcor - xpart ulcor)/0.5cm)):

draw ((ulcor)--(llcor)) shifted (i*0.5*cm, 0) dashed withdots scaled 0.5 withcolor red;

endfor;

for i=0 upto (ceiling((ypart urcor - ypart lrcor)/0.5cm)):

draw ((llcor)--(lrcor)) shifted (0,i*0.5*cm) dashed withdots scaled 0.5 withcolor red;

endfor;

for i=0 upto (ceiling((xpart urcor - xpart ulcor)/1cm)):

draw ((ulcor)--(llcor)) shifted (i*cm, 0) withcolor red;

endfor;

for i=0 upto (ceiling((ypart urcor - ypart lrcor)/1cm)):

draw ((llcor)--(lrcor)) shifted (0,i*cm) withcolor red;

endfor;

enddef;%------------ currentpicture size grid ---------------------------------------

def drawxx(expr xa, xb) = %-------------draw x, y axes-------------------------------

drawarrow ((xa,0)--(xb,0)) scaled u; label.bot(btex $x$ etex,(xb, 0)scaled u);

enddef;

def drawyx(expr ya, yb) =

drawarrow ((0,ya)--(0,yb)) scaled u; label.lft(btex $y$ etex,(0, yb)scaled u);

enddef;

beginfig(1)

u:=1cm;

drawxx(-3,3);

drawyx(-3,3);

label.llft(btex O etex, (0,0));

draw fullcircle scaled 4cm;

label.lrt(btex $\sqrt{n}$ etex, (2cm, 0cm)); %<---------- works !

% label.urt(btex $\frac{1}{n}$ etex, (0cm, 2cm)); %<---------- not work !

label.urt(btex $\displaystyle \sum_{k=1}^{n} k$ etex, (2cm, 2cm)); %<---------- works !

nowsize

endfig;end