# Math Help - Let X be N (mu, sigma squared)

1. ## Let X be N (mu, sigma squared)

Show that the points of infection of the graph of the p.d.f. of X occur at
x = mu plus/minus sigma.

2. Originally Posted by affelix
Show that the points of infection of the graph of the p.d.f. of X occur at
x = mu plus/minus sigma.