Formulas Definition and 522 Threads

Let's say I have some simple formulas I want to type -maybe inline- and I don't want to go through the trouble of using latex. Let's say I just want to type mainly symbols that are on the keyboard + some greek letters and subscripts. How can I do this? I'll appreciate your suggestions.

Hi Can I Find A Complet Website ... Including All About ( PULLEY & BELT ) System ... I Mean - Formulas Of Finding : 1. Pulley Diameters . 2. Belt Length . 3. Center Distance Between 2 Pulleys . 4. Number Of Belts . 5. Other Designing Formulas And Calculations . Also Asking If I Can...

i have a few formula for my physics assignment but i want to know the best way to set it out and what other formula i can use. i already have the formula f=m*a and a=(v-u)/t. i just really need the marks

Hi all, I'm a newbie here and sorry for my bad English. I want to share with you guys 2 formulas I've created luckily on a boring day: 1) Let R be circumscribed circle of triangle ABC, let S be it's area. We have: S=2R^2*sinAsinBsinC 2)Let S be area of triangle ABC, a=BC, b=CA, c=AB. We...

Someone has to help me here. 1. \int \frac{dx}{\sqrt{1 - x^2}} = sin^-1 x + C So the derivative of sin^-1x is \frac{dx}{\sqrt{1 - x^2}}? The -1 are exponents. It isn't working.

I am doing some revision for physics and can't evaluate these questions, can anybody help or give a formula. Q1. A mass of 2.2 Kg is suspended from a spring of spring constant K = 25 Nm^-1 What is the initial extension? Q2. The mass (in Q1) is pulled down a further 5cm and released...

I am stuck. I've gone through all my notes to try and figure out how to do this problem, with no success. Any help would be appriciated. Thank you! An insurance salesperson earns an annual salary of $12,000 plus a commission equal to 3% of the premiums on all policies sold. If f(x) is a...

I was just wondering if anyone here , knows a good site (or a book) for general Formulas for Celestial Mechanics ? I have looked a little, But I only find one or two equations per site, and most of them are the same, So if you do know one that would be great

Hello, I was hoping someone here might be able to explain to me how to determine electron dot diagrams and structural formulas of diatomic/polyatomic elements and compounds. For example... Nitrogen Tri-iodide ( NI3 ) I know the basics of electron dot structures, but when the atoms start...

This is going to seem like a very elementary question. Let's look at a phosphate ion for example. 1) How can I tell by looking at the name that it's an oxyanion? I know it's a polyatomic ion with phosporous. 2) Since it actually IS an oxyanion of phosphorous and oxygen, how do I know...

Mathematical Proof? Can anyone tell me how to prove things mathematically? I'm not sure you can because I'm convinced that proving equations and formulas is something that you just see how to do if you are intelligent (if that is the case, then I must be stupid). I have trouble with this in my...

Analysis of a newly discovered gaseous silicon-fluorine compound shows that it contains 33.01 mass % silicon. At 27oC 2.60g of the compound exerts a pressure of 1.50 atm in a 0.250-L vessel. What is the molecular formula of the compound? I guess PV=nRT needs to be used. P,V,R, and T are given...

let A be the amount of a drug present t units of time after its administration. this amount could be in terms of drug concentration. the basic assumption i made was that the rate of change of A is the difference between the rate of absorption and the rate of elimination where the rate of...

I know some of them, such as : cos (2x) = (cos x)^2 - (sin x)^2 sin (2x) = 2(cos x)(sin x) tan (2x) = (2tan (x))/(1-(tan x)^2) sin (a+b) = sin a cos b + cos a sin b cos (a+b) = cos a cos b - sin a sin b I need the other formulas such as sin x/2 cos x/2 sin x^2 cos x^2...

A projectile is fired with an intial speed of 113 m/s at an angle of 60 degrees above the horizonal from the top of a cliff 49.0 m high a) time to reach the max height b) max height above the base c) total time in the air d) horizonal range of the projectile I used the formula t^2 =...

Hi, I just got my physics test back and am hoping I can be helped with two questions. My instructor gave it back at the end of class leaving no time for going over it. 1) Suppose the period of the moon in its orbit about the Earth were 41.1 days and the moon were 768,000 km from earth...

Hello, I was just curious as to how I can write formulas out in Microsoft Word. I am doing a lab report and want to make it look more professional by makeing the equations and calculations appear xactly like the ones in the book. If anyone has any advice it would be much appreaciated. Thanks.

hey can someone give me the formulas and resoning behind finding focal length, magnitude of radius curvature, and other optic stuff. Thank you.

In my class, we developed a list of formulas for circular orbits. One of them is E/m=1/2v2-GM/r=constant. To derive escape velocity we find for what v does E=0. But an orbit of this nature is certainly not circular! How can we apply the formula?

I despise taking notes in school, and never do, so I was wondering if anyone knew of an online list of all formulas relating to Calculus so I can just highlight the ones we're learning as we go along in school. (I'm taking AP Calculus BC) Thanks

For some reason, I cannot comprehend the concepts behind this. I read the example problems over and over; however, I still cannot understand the process when I go to study or do work on it. Just to refresh your minds, the double-angle formulas: sin2x = 2(sinx)(cosx) cos2x = cos^2x -...

Basic equation: X/L = Wavelength/D if Wavelength = XD/L how do I solve for X, D , And L? Please Help