Summary DSC1520 equation and formula sheet

Items covered in this sheet:




1. Linear functions
2. Non Linear functions
3. Differentiation
4. Integration


Remember to practice as much as you can

, DSC1520

Formulas and definitions for Quantitative Modelling dummies

Back to basics!!!

Remember the following
y=mx + c
The m is the slope or gradient
You can calculate m in 2 ways:
Y2 – Y1
X2-X1
(this is only if you have 2 set of coordinates)
Or
If you only have one set of coordinates plot them
on the graph as a straight line then measure the
slope while moving 1 position on for your X
axes(horizontal line) and count the difference in
your y (vertical line). This will then be your m
total.

To calculate your x and y coordinates remember
to substitute them with a 0. Do the X and the Y
separately and then you will find the coordinates
always in this order (x;y).

The c is always the y intercept (thus where your
line strikes through your y line).
Y is always the horizontal line (remember y is for
sky).

Where 2 lines meet (2 different sets of
coordinates) is always the equilibrium

Demand
P=a-bQ
Supply
P=c+dQ
Cost
TC= VC + FC Total cost = Variable cost Fixed cost
Revenue
TR=PxQ Price x Quantity
Profit
π =TR-TC
Total revenue – Total cost