Formulas are equations that have been used so frequently in

Formulas are equations that have been used so frequently in certain applications that they have become standard. Examples are the simple interest formula, I = PRT, and selling price, S = C + M. Many fields, like accounting, manufacturing, photography, real estate, construction estimation, statistics, retail, etc., use formulas to make calculations quickly and conveniently. Investigate your major field or some other field of interest to determine what formulas are used.

1. Collect two formulas for your chosen field.

2. Explain the following: meaning of the symbols, what the formulas are used for, and how to solve the formulas. Use an example for this purpose. A suggestion is that you might interview instructors, recognized experts, and other professionals for this purpose.

3. Discuss the advantages of using the formulas, any difficulties in using them, and whether computers are used with them.

4. Discuss also why some fields may not use formulas.

Solution

1) Simple interest = pnr/100

2) Volume of a cylinder = pir^2 h

-------------------------------------

Formula 1: P = principal, n = no of years r = annual interest rate

Simple interest is calculated using the above formula for given principle any number of years.

---------------------------------------

Formula 2: Given a cylinder, may be pipe or barrel this helps to find the volume of the same.

r= base radius, h = height of cylinder pi = 22/7 or 3.14

--------------------------------------

Advantages are ready reckoners these formulas and help us to calculate in the long run without remembering the actual steps how the formula was got.

Especially repeated processes where a certain variable change while other variables remain the same these formulas help to solve fast and accurately.

Computers also use the formulas and nowadays software for all formulas are inbuilt in the internet site.

-----------------------------------------

Where formulas are not used:

Where the formula cannot be applied or where the solution do not follow a pattern then general formula cannot be applied.

Example, no of earthquakes, epidemics etc deaths, etc cannot be predicted or generalised into a formula.