sec 2.5
system:sage


{{{id=4|
x = 0 < 10
y= 0 > 10
plot(x^4 / 6)
plot(a- (11 / 6))
///
<html><font color='black'><img src='cell://sage0.png'></font></html>
}}}

{{{id=6|
exp(x)
///
<html><span class="math">\newcommand{\Bold}[1]{\mathbf{#1}}e^{x}</span></html>
}}}