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1949 days 전, jhlee2chn 작성

var('x') x1 = 1 x2 = 1.2 def f(x): return x^2 y1 = f(x1) y2 = f(x2) slope = (y2-y1)/(x2-x1) p = plot(f(x), x, 0, 4) pt1 = point((x1, y1), rgbcolor=(1,0,0), pointsize=30) pt2 = point((x2, y2), rgbcolor=(1,0,0), pointsize=30) d = 3 l = line([(x1-d, y1-d*slope), (x2+d, y2+d*slope)], rgbcolor=(1,0,0)) t1 = text("P(%s, %s)" % (float(x1), float(y1)), (x1+0.5, y1-0.8), rgbcolor=(1,0,0)) t2 = text("Q(%s, %s)" % (float(x2), float(y2)), (x2+0.5, y2-0.8), rgbcolor=(1,0,0)) t3 = text("slope: %s" % float(slope), ((x1+x2)/2-0.5, (y1+y2)/2), rgbcolor=(1,0,0)) g = p+pt1+pt2+l+t1+t2+t3 g.show(xmin=0, xmax=4, ymin=-1, ymax=20)