/sci/ - Science & Math

>tfw not using derivatives for the first problem

f^(n)(x)=1/x=(n!)/(x^n+1). If n is even, f^(n)(x) is pos. If n is odd, f^(n)(x) is neg.

false. 0/0 = 0 because there is 1 'zero' in that.

Hey /sci,
I need some help with my Calc 2 homework... Not all of it, I just need help kicking off this problem here:
Consider the given curves to do the following.
x+y=4 , x=8-(y-2)^2
Use the method of cylindrical shells to find the volume V of the solid obtained by rotating the region bounded by the given curves about the x-axis.

In order to start the integral I need to know the boundaries, which are the intersections of the graph. But when I graph it I cannot seem to find the proper intersections. I only find one when there should be two. Can anybody please help me?

I desire a CMI from the American Council for Accredited Certification, but I need to pass their examination. On their website the ACAC suggests the following materials for review:

ACGIH, Bioaerosols: Assessment and Control (Cincinnati: ACGIH, 1999)

AIHA, Field Guide for the Determination of Biological Contaminants, 2nd ed. (Fairfax, VA:
AIHA, 2005)

IICRC, Standard S500-2006: Standard and Reference Guide for Professional Water
Damage Restoration, 3rd edition (Vancouver, WA: IICRC, 2006)

IICRC, Standard S520: Standard and Reference Guide for Professional Mold
Remediation (Vancouver, WA: IICRC, 2003)

I cannot find these texts in any libraries near me. I also cannot find them in pdf or any other ebook format. Naturally, searching for torrents of them yields no results either. Amazon has two of them used and at a cheap price. Where do I find them besides directly from the publisher or from amazon?

TL;DR:
Any microbiologists know where to acquire the above texts for cheap/free?