Functions

Question 1

What is a function?

Answer 1

A function is a relationship in which values of a dependent variable are determined by the values of one or more independent variables. (F)

Question 2

Importance of functions in the business world

Answer 2

Functions are important in the business world because they establish relationships amongst various business variables which facilitates their control for achieving organizational objectives.

Question 3

What are polynomial functions

Answer 3

A polynomial function is a function with only one independent variable and involves only positive integer exponents

Question 4

What is a 1st degree polynomial?

Answer 4

a linear function whose highest power is 1, that is of the general form
y = a+bx

Question 5

What is 2nd degree polynomial?

Answer 5

It is a quadratic function whose highest power is 2
y = a + b1x + b2x2 (where b2 ≠ 0)

Question 6

What is 3rd degree polynomial?

Answer 6

It is a cubic function whose highest power is 3.
y = a + b1x + b2x2 + b3x3(where b3 ≠ 0).

Question 7

What are multivariate functions?

Answer 7

These are functions with more than one independent variable
2x-y=2
4x + 3y - 4z = 14

Question 8

What are logarithmic functions?

Answer 8

These are functions whose at least one term as the independent variables has a logarithm.

Question 9

What are exponential functions?

Answer 9

These are functions whereby the independent variable is at least part of an exponent or power.

Question 10

what is a continuous function?

Answer 10

It is one which the values of a dependent variable are defined for all values of the independent variable

Question 11

What is a discrete function

Answer 11

A discrete function is a function whose dependent variable is defined only for particular values of the independent values

Question 12

What is a step function?

Answer 12

These are functions which take a constant value for a given range of activity