In Grade 10, you studied graphs of many different forms. In this chapter, you will learn a little more about the graphs of exponential functions.
Functions of the form
$y=a{b}^{(x+p)}+q$ For
$b>0$
This form of the exponential function is slightly more complex than the form studied in Grade 10.
Investigation : functions of the form
$y=a{b}^{(x+p)}+q$
On the same set of axes, with
-5\le x\le 3 and
-35\le y\le 35 , plot the following graphs:
$f\left(x\right)=-2\xb7{2}^{(x+1)}+1$
$g\left(x\right)=-1\xb7{2}^{(x+1)}+1$
$h\left(x\right)=0\xb7{2}^{(x+1)}+1$
$j\left(x\right)=1\xb7{2}^{(x+1)}+1$
$k\left(x\right)=2\xb7{2}^{(x+1)}+1$
Use your results to understand what happens when you change the value of
$a$ .
You should find that the value of
$a$ affects whether the graph curves upwards (
$a>0$ ) or curves downwards (
$a<0$ ). You should also find that a larger value of
$a$ (when
$a$ is positive) stretches the graph upwards. However, when
$a$ is negative, a lower value of
$a$ (such as -2 instead of -1) stretches the graph downwards. Finally, note that when
$a=0$ the graph is simply a horizontal line. This is why we set
$a\ne 0$ in the original definition of these functions.
On the same set of axes, with
-3\le x\le 3 and
-5\le y\le 20 , plot the following graphs:
$f\left(x\right)=1\xb7{2}^{(x+1)}-2$
$g\left(x\right)=1\xb7{2}^{(x+1)}-1$
$h\left(x\right)=1\xb7{2}^{(x+1)}+0$
$j\left(x\right)=1\xb7{2}^{(x+1)}+1$
$k\left(x\right)=1\xb7{2}^{(x+1)}+2$
Use your results to understand what happens when you change the value of
$q$ .
You should find that when
$q$ is increased, the whole graph is translated (moved) upwards. When
$q$ is decreased (poosibly even made negative), the graph is translated downwards.
On the same set of axes, with
-5\le x\le 3 and
-35\le y\le 35 , plot the following graphs:
$f\left(x\right)=-2\xb7{2}^{(x+1)}+1$
$g\left(x\right)=-1\xb7{2}^{(x+1)}+1$
$h\left(x\right)=0\xb7{2}^{(x+1)}+1$
$j\left(x\right)=1\xb7{2}^{(x+1)}+1$
$k\left(x\right)=2\xb7{2}^{(x+1)}+1$
Use your results to understand what happens when you change the value of
$a$ .
You should find that the value of
$a$ affects whether the graph curves upwards (
$a>0$ ) or curves downwards (
$a<0$ ). You should also find that a larger value of
$a$ (when
$a$ is positive) stretches the graph upwards. However, when
$a$ is negative, a lower value of
$a$ (such as -2 instead of -1) stretches the graph downwards. Finally, note that when
$a=0$ the graph is simply a horizontal line. This is why we set
$a\ne 0$ in the original definition of these functions.
Following the general method of the above activities, choose your own values of
$a$ and
$q$ to plot 5 graphs of
$y=a{b}^{(x+p)}+q$ on the same set of axes (choose your own limits for
$x$ and
$y$ carefully). Make sure that you use the same values of
$a$ ,
$b$ and
$q$ for each graph, and different values of
$p$ . Use your results to understand the effect of changing the value of
$p$ .
These different properties are summarised in
[link] .
Table summarising general shapes and positions of functions of the form
$y=a{b}^{(x+p)}+q$ .
$p<0$
$p>0$
$a>0$
$a<0$
$a>0$
$a<0$
$q>0$
$q<0$
Domain and range
For
$y=a{b}^{(x+p)}+q$ , the function is defined for all real values of
$x$ . Therefore, the domain is
$\{x:x\in \mathbb{R}\}$ .
The range of
$y=a{b}^{(x+p)}+q$ is dependent on the sign of
$a$ .
Therefore, if
$a>0$ , then the range is
$\left\{f\right(x):f(x)\in [q,\infty \left)\right\}$ . In other words
$f\left(x\right)$ can be any real number greater than
$q$ .
price of the related goods 2 price of the given commodity 3 income of the consumer 4 taste and preference 5 expectation in the future price
John
pls the taste and preference
Nas
explain briefly
Nas
a consumer taste and preference commodity changes for a time the man becomes
John
sorry sorry
John
is when the price of a commodity becomes high and can't afford example Samsung instead of iPhone
John
consumers who have high intense for goods will purchase the goods even if the price of that commodity increases because he or she preferred that commodity.people will be prefer iphone as its price increase
Yussif
as usual bad taste of preference is when a consumer regrets from one commodity to another in terms of the price
John
thanks alot
Nas
you're welcome
John
#Preference;
#Income
#Test
Dereje
#price Of Commodity
#Income
#Taste
#Preference
Dereje
#Market is The Place Where Buyers And Sellers Are Exchanging Their Goods And service.
#
Dereje
difference between macro and micro economics
Lawrence
Microeconomic Study about individual consumers market
But Macroeconomis Study General economic Process Such As
#Aggregate Demand
#Aggregate Supples
#GDp=
#GNp
Dereje
nice so can u run down a brife discussion on GDP
Lawrence
good
Chinex
pls can someone differentiate between the perfectly elastic, perfectly inelastic and unitary
and then again pls what are the types of elasticity, the methods of calculating it
thank u
yhar
Perfectly inelastic is when the coefficient is equal to zero
Unitary is when the coefficient is equal to one
But am not sure if we have perfectly inelastic
John
I'm kind off confuse abt the PED, IED and co
are they the types of elasticity we've
yhar
Yh the types are
price elasticity
cross and income elasticity of demand
John
do we've specific formulaes to calculate for each of them
yhar
yes. PED. changes in quantity demanded divided by changes in price
Vealmurugan
so pls what's the general name given to unitary, elastic n inelastic ?
are the names given to the final result after doing the calculations?
P2-P1Ã·P1Ã100or
Q2-Q1ÃQ1Ã100 PED @john pls tis is what m talking abt
yhar
Yh is the formula for PED
John
Pls are you having a for PED
John
thank u very
yhar
dy
Jobang
what is economics
Tayyeb
economics is a science which studies human behaviour as a relationship between ends and scarce means which have alternative use
John
is a science which study human behavior as a relationship between ends and scarce means which have alternative uses
Divine
yes this is because economic provide a body of knowledge on human economic principles under theories and these theories can be verified with real world data using science method in other words it was scientific method in arriving at solution identification of problem or basic data collection among
John
unitary ElasticWhen Elasticty =1 Perfectily Elastic When 0<1 inelastic when 0>
Some of the Disadvantages are:-
1. Production not according to individual Tastes
2. Monopoly
3. Not Flexible
4. Over-Production
5. Heavy loss and Dislocation
6. Decline of Cottage and Small Scale Industries
7. Adverse Effect on Labourers
8. Unequal Distribution of Wealth
Asrar
And what can be the advantages too
Enow
1.adequate satisfaction
2.reduce importation
Yussif
Reduce importation how pls
Enow
the country will have enough products.this will reduce the level of government expenditure on imported goods especially
Yussif
Some of Advantage
1. Division of Labour
2. More Production
3. Use of machines
4. Low Cost of Production
5. Standard Goods
6. Advertisements and Salesmanship
Asrar
Some of its disadvantages are :
(i) Less Supervision
(ii) Individual tastes ignored
(iii) Absence of Personal Element
(iv) Possibility of depression
(v) Dependence on Foreign Markets
(vi) International complications and war
(vii) Cut-throat Competition
(viii) Less Adaptability
unemployment is a situation where an individual is easily and ready to render services but resources are not available.
Phelix
Unemployment refers to individual who are employable and seeking a job but are unable to find a job or doesn't have a job. To find the unemployment rate in a given economy, you must divide the unemployed people by the total number of employed people in the work force. Indicator of economy's status.
elkanah
unemployment is The level of joblessness in an economy, often measured as a percentage of the workforce.
Unemployment was reported at 5.2% in May, up from 4.9% in April
ANNOR
Pls wat are the factors that influence unemployment
Olotu
just trying ⚠
factors that affect unemployment
- the rate of imported inflation
- interest rates
- levels of investment
Wallace
unemployment is a situation where country labour Force who are active capable and are really searching for or willing to work at assistant wage rates but cannot find job
John
working age ppl who have no job for a period of time. there are different types of unemployment like structural, fictional, seasonal n etc. there is a formula to calculate it. n have factors causes this.
Vealmurugan
factors that influence on employment 1 high population growth growth as against low Industries growth rates 2 lack of skills or mass irritracy 3 government policies such as minimum wage trade liberalization and high taxation 4 initial capital requirements
John
I'm an economics student, what I do now will make my life a success,
mostafiz
Thank you
Tantoh
😂😂😂😂😂😂😂☺☺☺🙂🙂🙂🙂🙂🙂🙂🙂🙂🙂🙂👩🎓👩🎓👩🎓👩🎓👩🎓👩🎓
Leta
what is difference between economic growth and economic development?( I want unique &brief answer)?
Leta
unemployment is when legitimate labour Force are not engaged in the economy.
Lawrence
economic growth is the already settled growth of the economy and National income can be used in verification of that
while economic development is the process of improvement in an economy