1. Macros Data Tables Arrays

2. Macros VBA user subroutine to automate repetitive operations in excel
Keyboard shortcut: fast way to make the macro run (CTRL+ «letter»)
Activate the macro
Attach macros to a button on the Ribbon or the Quick access toolbar

3. Data tables To do complex sensitivity analysis
One dimensional (one variable is changed)
Two dimensional (two variables are changed)
Put formulas on the top row and the variable we wish to vary in the column
Highlight the table area
Data/sensitivity analysis/ Data table
Select the cell input in row or in column

4. Data Tables Two dimensional (two variables are changed)
Upper left hand corner of the Table contains the formula
Two variables we wish to vary in the adjacent column and row

5. Arrays, matrices Row vector, column vector, matrix
Matrix operations (addition, scalar multiplication)
Transpose(matrix)
matrix multiplication: Mmult(matrix 1; matrix 2)
Inverse of a matrix: Minverse(matrix)
CTRL+SHIFT+ENTER

6. Solving systems of symultaneous linear equations
Ax=b
A matrix of coefficients
x=vector of unknowns
b=vector of constants