Math Forum / Mathematics / Undergraduate Math / August 2007

I need help on this:
An element a in a ring R has a left quasi-inverse if there exist an element b \in R with a + b - ab = 0. Prove that if every element in a ring R except 1 (where 1 is the neutral element of multiplication) has a left quasi-inverse, then R is a division ring.
the ...

Hey all,
If anybody is annoyed at the recent increase in people asking for solution manuals, the trend is quite predictable. Take a look at:
http://www.google.com/trends?q=solution+manual
Wait a few more weeks, and we'll get back to normal (and infinitely more important) discussions ...

Do you have solutions to:
Analytical Mechanics for Relativity and Quantum Mechanics
by Oliver Davis Johns
and to:

Im looking for solutions manual for Materials Science And Engineering
6th or 7th Edition by William D. Callister,Jr. and Fundamentals of
Engineering Thermodynamics 6th edition by Moran. let me kno  thanks

The following matrix is obtained from a system of equations.   The
solution to the system is
row1 = (1, 0, 6, 5)
row2 = (0, 1, -4, 3)

How can I go about getting the solutions for Fluid Mechanics 6th
editinon by White and Vector Mechanics for Engineers- Dynamics 8th
Edition by Beer.
Your quick response would be greatly apprecitated.

has anyone got the solution manual for "Wireless Communication" by A
Goldsmith.

I need instructor solution manual for "Wireless Communication"by A
Goldsmith.If anyone got it,please do contact me ericlewald@gmail.com

I have sent an e-mail to fhernand@universia.net.mx and that e-mail was
undeliverable. I sent an e-mail to bergh123@yahoo.com and
mattosbw1@gmail.com, but I got no response. I am willing to buy the
Advanced Strength and Applied Elasticity (4th Ed., Ugural) solution

I need solution manual of "wireless communications" by A goldsmith.If
someone has it,please email me.Thanks

Got another one for the forum since I got such a great reply last time.
The question is:
Find a positive rational number and a positive irrational number both smaller than 0.00001.
I don't know where to begin.

How do i solve this integral?
xdx/x^2-6x+13
thanks in advance

Please tell a thicko who is not a student the integral wrt x of
x / (ax^3 + bx^2 + cx + d)
Many thanks

1
a) Solve the integral of xtan^-1(x^2) dx from 0 until 1.
b) Study the convergence for the integral from 0 to infinitive with  
fx = [1/(cubic root of (1+x^3)] dx

hi, i am going over multiple integrals for the test and i came across
a few examples which are unclear. it has to do with some really basic
rule that i am missing.
here's one: