Tutors Answer Your Questions about Exponential-and-logarithmic-functions (FREE)
Question 173000: How do I evaluate the functions for the values of x given as 1, 2, 4, 8, and 16 and then describe the differences in the rate at which each function changes with increasing values of x? This is like totally a different language for me, please help!!!!
1. f(x) = 5x - 3
2. f(x) = x2 - 3x + 2
3. f(x) = 2x3 + 7x2 - x - 1
4. f(x) = 10x
5. f(x) = ln x
Click here to see answer by stanbon(57277)  |
Question 172999: For the exponential function e^x and logarithmic function log x, graphically show the effect if x is doubled, can someone help me with the problem, I do not understand what they are asking. Thank you!!!
Click here to see answer by gonzo(654) |
Question 173161: How do you simplify fractions? Please help me. I am home taught and my parents have no idea what algebra even is, and told me to teach myself. So i am. I dont understand simplyfying problems. I can do two to the power of whatever and I'm good at it, but i cant grasp simplifying. BYE
Click here to see answer by tutorcecilia(2152)  |
Question 173228: I have a question regarding one particular section in my assignment.
Here is my assignment:
By Sunday, December 14, 2008, visit the following websites by copying and pasting the addresses into your browser:
http://www.purplemath.com/modules/graphexp.htm
http://www.purplemath.com/modules/expofcns.htm
http://www.purplemath.com/modules/logs.htm
http://www.purplemath.com/modules/graphlog.htm
http://www.purplemath.com/modules/logrules.htm
Spend some time on these sites and go through the information on graphing exponential and logarithmic functions. Summarize your findings in your own words; be sure to include the URL of each web site from which you drew information. In your response include the following points:
* General form of the function: exponential and logarithmic
* One example each of exponential and logarithmic function
* Characteristics of the graphical representation of each function (Minimum four characteristics)
Post your response in this Discussion Area.
In addition to the websites mentioned above, you can search the web for more information using the following keywords 'Exponential Function' and 'Logarithmic Function'.
Question: The only part I am confused on is the part about characteristics. What are characteristics in this particular situation? Could you give me an example?
Click here to see answer by solver91311(16872)  |
Question 173796: I am having trouble getting these two. Can someone please help me...please..Thank you..Evaluate the functions for the values of x given as 1, 2, 4, 8, and 16. Describe the differences in the rate at which each function changes with increasing values of x.
3.f(x) = 2x3 + 7x2 - x - 1
5.f(x) = ln x
Click here to see answer by stanbon(57277) |
Question 173904: My question is did I do this one correctly? if so..i am having trouble graphing this..can someone help me?
Evaluate the functions for the values of x given as 1, 2, 4, 8, and 16. Describe the differences in the rate at which each function changes with increasing values of x.
4. f(x) = 10x
f(1)= 10^1= 10
f(2)= 10^2 = 100
f(4)= 10^4 = 10000
f(8) = 10^8 = 100000000
f(16) = 10^16 = 10000000000000000
Click here to see answer by stanbon(57277) |
Question 173904: My question is did I do this one correctly? if so..i am having trouble graphing this..can someone help me?
Evaluate the functions for the values of x given as 1, 2, 4, 8, and 16. Describe the differences in the rate at which each function changes with increasing values of x.
4. f(x) = 10x
f(1)= 10^1= 10
f(2)= 10^2 = 100
f(4)= 10^4 = 10000
f(8) = 10^8 = 100000000
f(16) = 10^16 = 10000000000000000
Click here to see answer by josmiceli(9664)  |
Question 174032: Can someone help me graph this please? I have the hardest time with graphing. I can usually figure the problem out, but the graphing is where I struggle. Thank you so much.
Exponential function: Logarithmic function:
f(x)=y=b^x f^-1*(x)=y=logbx
now if b=4 the vertical line is y=4^x and the horizontal line is f(x)=log4x
Click here to see answer by gonzo(654) |
Question 173795: I am having trouble getting these two. Can someone please help me...please..Thank you..Evaluate the functions for the values of x given as 1, 2, 4, 8, and 16. Describe the differences in the rate at which each function changes with increasing values of x.
3.f(x) = 2x3 + 7x2 - x - 1
5.f(x) = ln x
Click here to see answer by solver91311(16872) |
Question 173667: Can someone help me graph these equations,the questions are solved already. I just need to graph them, your help will be greatly appreciated.
· An exponential function
y = p*(1 + r)^x (P and r are constants)
· A logarithmic function
y = ln(x)
x = 5 is linear,
x + y = 9, a linear equation with two variables
x^2 - 4x + 3: Polynomial of three terms
Click here to see answer by midwood_trail(310) |
Question 175493: Assume that the population of the United States is increasing exponentially with time. The 1970 census showed that the population was about 203 million. the 1980 census showed that the population had grown to about 226 million.
a. Find the particular equation expressing population in terms of the number of years that have elapsed since 1970.
b. Use your equation to predict the population this year.
c. Predict the year in which the population will reach 400 million.
Click here to see answer by Mathtut(3670) |
Question 175674: square root(x+8) = square root(2x+7)-5
this is what i've gotten so far.
1. (x+8)=2x+32-10squareroot(2x+7)
2. -x-24=-10squareroot(2x-7)
3. x^2 - 200x -124=0
4. quadratic equation outcomes are 200.6180898 and -.6180898248.
is that right?
Click here to see answer by stanbon(57277) |
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Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535
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