## Search found 6 matches

### Re: Basic LaTeX Guide

I never knew how to do these before
$x^2 + 4x + 4 = (x + 2)^2$
on Wed Aug 05, 2009 2:45 pm

Forum: Forum Rules & Guides
Topic: Basic LaTeX Guide
Replies: 5
Views: 38655

### Re: GRE practice with fractions and exponents

$(\frac{1} {2})^a = (\frac{1}{3})^b$
$2^a = 3^b$
$a ln 2 = b ln 3$
$a / b = ln 3 / ln 2$
so $b < a >0$
on Wed Aug 05, 2009 3:02 pm

Forum: Beginning Algebra
Topic: GRE practice with fractions and exponents
Replies: 5
Views: 2984

### Re: 4^(2X)=10: solve for value of X in exponent

$4^{2x} = 10$
$2x ln 4 = ln 10$
$2x = \frac {ln 10}{ln 4}$
$x = \frac{ln 10}{2 ln 4}$
on Wed Aug 05, 2009 3:16 pm

Forum: Beginning Algebra
Topic: 4^(2X)=10: solve for value of X in exponent
Replies: 5
Views: 2387

### Re: need help understanding process of solving 4x + 9 = -3

do you understand that you need to use inverse operations?? inverse operations are operations that undo the other.(e.g. - 2 + 2 = 0). Now you need to isolate x.
on Wed Aug 05, 2009 4:22 pm

Forum: Beginning Algebra
Topic: need help understanding process of solving 4x + 9 = -3
Replies: 4
Views: 1864

### tell me how to do this??

$\int_a^b - ln \sqrt{cos^2 x} dx$
on Wed Aug 05, 2009 7:43 pm

Forum: Calculus
Topic: tell me how to do this??
Replies: 1
Views: 1083

### how do I type symbols like pi and phi ??

how do I type symbols like pi and phi ??
on Wed Aug 05, 2009 8:05 pm

Forum: Forum Rules & Guides
Topic: how do I type symbols like pi and phi ??
Replies: 1
Views: 2315