Simplify Definition and 371 Threads

Is there a way to simply x-x-x? I know that x+x+x can by simplifed as 3x, but what about subtraction? One would think that if multiplication is just a simplification of addition, then indeed, division is just a simplification of subtraction. I need to know this for an equation I have to make...

This is probably easy for everyone on this forum but me. Can someone please explain this to me. I need to simplify this: (sqrt(x) - 4) / (x - 16)) am I on the right track by doing it this way... (sqrt(x) - 4) / (sqrt(x) - 4) (sqrt(x) + 4) ...then cancel the (sqrt(x) - 4) in the...

B = uNI/2L * (L/2/(\sqrt{((L/2)^2)+R^2)} - (-L/2/(\sqrt{((-L/2))^2+R^2))} I get.. B = uNI/2R (for those wondering, this is the equation to find the magnetic field when a Hall probe is placed in the center of a solenoid) they ask me to figure out the % diffeerence between the field at the...

I need some help I got an expression involving series... x - (2/6)x^3 - (20/120)x^5 - (1080/5040)x^7 - (140400/362880)x^9 - ... I remove x from my summation expression.. but Right now, I can express as a summation from n = 1 to infinity of (??) x^(2n + 1) / (2n + 1)...

can u simplify this further? (25-x) / (-25-x) thanks.

Hi, I've been doing a QM problem to do with a potential barrier going from x = 0 to x = a. I need to work out an expression for the transmission coefficient T and have a horrible looking expression: I can't use LaTeX properly, so: A = (F/4k_{1}k_{2}).e^ik_{1}a[e^-k_{2}a (k_{2} +...

I was never taught how to do this I was just given problems with no solutions so I don't know what to do can someone please help me I have two questions which are similar maybe if I get help with one I can solve the other one on my own. It says simplify the following \cos(\pi+x) + \cos...

could someone show me the steps on how to simplify log5/log125 to 1/3. I can't do it

\frac {x+2} {x-1} \frac \frac {4x+1} {x-1} Would using the bowtie method work? Cross multiply and then subtract the two answers found from each other, and put that result over the multiplaction of the two denominators. ? EDIT: I messed up the Latex thing. THe 4x-1 and the x-1 are supposed...

Which is the fastest way to simplify: (x+a)^2*(x-a)^2 to (x^2-a^2)^2 ? thx

i have to integrate the next: (x^2)(e^x)dx/((x+2)^2) It should be done by parts. How I can simplify it? Is (4x+4) (e^x) dx/(x+2)^2 easier to be integrated?

Dear Friends, I have this problem: \frac{i\hbar\Psi}{2m}\frac{\partial\nabla\Psi}{\partial t}+(\frac{i\hbar(\nabla\Psi)}{2m}\nabla)\frac{i\hbar(\nabla\Psi)}{2m} ... and i'd like to simplify it... is is possible? best reggards

I'm trying to simplify -2rh-h^2+2r/h can I simplify this anymore by canceling out the h, or is that not correct. Also, I don't believe I can factor out the h in the numerator because it's not in all 3 on top, is that correct?

Here's the question: Simplify the following as much as possible: ln 5th Sqrt of y^2 a> 2/5 ln y b> -3 + ln y c> 3 + ln y d> 5/2 ln y A,B,C, or D, which is it?

o:) simplify and state restrictions [(x+1)/(2x^(2)-7x+6)]-[(x-3)/(2x^(2)-x-3)] I got 3x+7 as my answer is this correct? and for my restrictions I got x cannot = 3/2,2,-1 are these correct?

Simplify (x+1)/(x-1) multiplied by (x+3)/(1-x^2) divided by (x+3)^2/(1-x) Im not sure how to factor the 1-x^2 and what to do with 1-x I don't know how to simplify this please help someone. The answer to this question is 1/(x-1)(x+3) x cannot = 1,-1, and -3

1) (-7+20)(-10-3i) 2) (-2-5i)/(3+4i) I don't think I did these two questions right does anyone know how?

Hi! I'm new to those forums, so I just want to say "Hello everbody!". To my question: How can I simplify \frac{\frac{1}{x+\Delta x}-\frac{1}{x}+ \frac{1}{x^2}\Delta x}{\Delta x} I've spent some hours on google, but no result. Just tell me the name of the method and I'm really gratefull!

Hi, I have got this expression from Mathematica: Sqrt[a^2*(Cosh(x))^2*(Sin(y))^2] I have tried to simplify this expression with Simplify[], but it returns the same result. I have tried to solve some other expressions and it returned some strange forms. For example: I have tried to solve...

I have to integrate: sqrt( (3t^2)^2 + (1)^2 + (sqrt(6)t)^2 ) at the limits t=1 and t=3 I can't figure out how to simplify the problem so that I can do the integral. So far the farthest I've gotten is the obvious: sqrt( 9t^4 + 6t^2 + 1 ) now I am stuck.

Hi All, Does Anyone know of any Math programs that are easy to use that I can download from the net. What I am trying to do is organize a long string of digits in groups of three, add the groups, and subtract from each running total certain incremental values. Thanks in Advance. Dan