I found a spider in my garage today, and thought it might be a black widow, but it didn't look quite right (no red marking on the abdomen, the abdomen seems small, and the legs are brown with black markings).

It turns out that I am used to seeing L. hesperus, and that this particular spider is likely L geometricus, an invasive species of brown widow that is displacing the native spiders in my region.

The more you know.(tm)

(I'm going to go kill it with poison, now, as I don't want venomous spiders in my house.)

Hrm... on the other hand, they don't deliver as much venom as the native species, so maybe I'll let it live.

Got accepted into collage still have to met General ed requirements through :'(

Almost through with taking my first Contour Integral :)

mathb.in/25979

I'm having trouble on how I might deduce that $$I=e^{i\pi/4}\sqrt(\pi)/2$$

Oh nvm I see the mistake :)

Still stuck on figure how to deduece that $$I=e^{i\pi/4}\sqrt(\pi)/2$$ from I=\int_{0}^{\infty}e^{ix^{2}}dx

Nvm I could just do a u-substitution since the integrals converage on the lower half plane :)

All right got it @Simply and @amWhy wanna check it :): mathb.in/25982

Scratch that fixed some more typos it's here: mathb.in/25985