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load(draw); L:2; /* x $B$N%5%$%:(B */ M:1.5; /* y $B$N%5%$%:(B */ f(x):=sin(x); a:0; b:f(a); epsilon:0.4; c:abs(subst(a,x,diff(f(x),x)));/* $B$3$N9T$O%^%M$J$/$F$$$h$$(B*/ delta:epsilon/(2*c);/* delta $B$r$"$kDxEY7h$aBG$A$7$F$$$k!#(B*/ draw2d( yrange=[b-M,b+M], rectangle([a-delta,b-epsilon],[a+delta,b+epsilon]) ,explicit(f(x), x, a-L, a+L) ,terminal=wxt );
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