對數函數
Author: 藍邦偉  老師

顯示圖形

u = Vector((x(Corner[1]), 0), (x(Corner[3]), 0))
v = Vector((0, y(Corner[1])), (0, y(Corner[3])))
f_1(x) = ld(x)
f_2(x) = lg(x)
f_3(x) = log(x)
f_4(x) = lg(x) / lg(3)
f_5(x) = ld(-x)
f_6(x) = -ld(x)
f_7(x) = -ld(-x)
f_8(x) = abs(ld(x))
Graph = 0 (slider from 0 to 10, step 1)
a = true
f_9(x) = ld(abs(x))
f_{10}(x) = lg(x) / lg(1 / 3)