User:Jhncls/sandbox

First line

Second line in the sandbox--Jhncls (talk) 13:43, 12 August 2013 (UTC)

Expression
$$\lim_{x\rightarrow-\infty} \frac { \sqrt{(2x+1)^2+6}- \sqrt {(x+2)^2+1} } {( x + 7)} $$

&lambda; + y = &pi;r2.

in een tekstregel x = (y2 + 2) geschreven

x = (y2 + 2)

$(−π, π]$,