math_help

two college algebra questions

pineapplemango wrote in math_help Nov 11, 2013 13:00

1st problem ( Read more... )

Justification for Deducing Biconditionality

iconoclass wrote in math_help Aug 18, 2013 15:07

Let us say that I want to prove the biconditional a ↔ b. At some point in proof, I show a → b, and at some other ( Read more... )

Axiomatic Set Theory by Patrick Suppes

iconoclass wrote in math_help Jul 22, 2013 19:18

Has anyone read this book? I can't figure out the meaning of the term "constants ( Read more... )

set theory, axiomatic set theory

Stats & Regression

alexidior wrote in math_help Apr 23, 2013 17:17

I'm stuck on a problem that requires me to find the model of best fit for a set of data ( Read more... )

Summation of Roots

iconoclass wrote in math_help Jan 03, 2013 13:18

Σn=1n=99√n+1-√n

Where do I even begin?

Function with 90 degree rotational symmetry about the origin?

lackasexical wrote in math_help Nov 12, 2012 10:20

I haven't done calculus level math in a long time, and this question has got me stumped ( Read more... )

function, calculus, graphing

(Untitled)

iconoclass wrote in math_help Sep 27, 2012 12:11

THERE IS NO EVIL ON THIS EARTH QUITE LIKE MATHEMATICAL NOTATION IN MICROSOFT WORD.

Synthetic Division Terminology

iconoclass wrote in math_help Sep 24, 2012 16:26

If I am dividing a polynomial by x-2, what is the 2 (as in 2]) called?

x/2-1=x/5+2

joie_ wrote in math_help Sep 09, 2012 14:01

[x]/[2] -1 = [x]/[5] +2

-2 -2

[x]/[2]-3=[x]/[5]

Then I go and do this:

[x]/[5]-[x]/[2]-3=[x]/[5]-[x]/[5]

So I end up with this:
[x]/[2]-[x]/[5]-3

I have no idea what I am doing with this problem. And, everything I keep looking at it just "magically" becomes 10.

posts that show work, algebra

I = PRT

xiaa wrote in math_help Sep 06, 2012 14:59

John invests 2500 more than Suzy at a 2% higher interest rate than Suzy. John earns $700 in interest while Suzy earns $300 ( Read more... )