Question 898121
use rules #1 and #2 (second section where it says "Rules") listed on this page


<a href="http://www.mathsisfun.com/calculus/integration-rules.html">http://www.mathsisfun.com/calculus/integration-rules.html</a>


to get


{{{int(6x,dx) = 6*int(x,dx)}}}


{{{int(6x,dx) = 6*((x^2)/2) + C}}}


{{{int(6x,dx) = 3x^2 + C}}}