數與數線(5)
Author: 藍邦偉　老師

$ \frac{1}{2+\sqrt{3}}=\frac{4-3}{2+\sqrt{3}}=2-\sqrt{3} $

$ \frac{11}{\sqrt{13-4\sqrt{3}}}=\frac{11}{\sqrt{13-2\sqrt{12}}}=\frac{11}{\sqrt{12}-1}=\frac{12-1}{\sqrt{12}-1}=\sqrt{12}+1=2\sqrt{3}+1 $

2-\sqrt{3}<x<2\sqrt{3}+1⇒0.2<x<4.4⇒x=1,2,3,4

n = 0 (slider from 0 to 3, step 1)