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Question 705722: Prove the following trigonometric identity
(tan x - sin x) / sin^3 x = 1 / cos x (1 + cos x)

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Question 703323: given the functions and , determine a simplified equation for
Click here to see answer by filboi(35)

Question 706627: if the domain of f is [0,11] and the domain of g is [3,13] what is the domain of f+g? I am confused on combining these.
Click here to see answer by jim_thompson5910(35256)

Question 706843: Simplify

((x^2-16)/(x^2+5x+6))((x^2+5x+4)/(x^2-2x-8))
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Question 703909: x+y=-2
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Question 706938: How can I tell if a graph is a function or not?
Click here to see answer by Edwin McCravy(20054)

Question 707071: Given f(x)=2x^2+3x+5 and g(x)=3x+4 what is f/g)(2)? I have done the addition, subtraction, and multiplication of this problem but completely forgot how to do division. Any help will be greatly appreciated.
Click here to see answer by josgarithmetic(39613)

Question 707097: If f(x)=2x+3
g(x)=x-1 are two functions defined on a set of real number show that [fg(x)] raise to power -1=g raise to power-1[f raise to power-1(x)]. NOTE raise to power is inverse
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Question 707200: Determine whether the equation x+y=9 defines y as a function of x.

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Question 707830: Decide whether each relation defines Y as a function of X. Give the domain and range.
xy=3
Does the relation define a function? - I answered Yes
What is the domain and what is the range?
The answer is Domain = (- infinity, 0) union (0, infinity)
Range = (- infinity, 0) union (0, infinity)
HOW DO I GET THIS ANSWER? WHAT ARE THE SPECIFIC STEPS?

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Question 707837: Evaluate the function at the given value of the independent variable and simplify.
f(x) = 7x + 3; f(3)
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Question 707866: f(x)=(3x^2)+5
If t is a number find f(t+1) and f(t-1) Simplify your answers.
I am totally lost. :( Please help, thanks!
Click here to see answer by josgarithmetic(39613)

Question 707912: Given the function f(x) = 2x + 2, what is the value of x if f(x) = 6?
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Question 708154: I need to find b in the following equation
a = b plus c over d, subtract e

a=\frac{b+c}{d}-e

i just need to find what the equation would look like if it was b= not a=
thanks
Click here to see answer by josgarithmetic(39613)

Question 708131: What is the domain of the following quadratic function?
f(x)=2x^2+5x-7?
Click here to see answer by KMST(5328)

Question 708324: What is the discriminate of x^2-4x+9=0
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Question 708336: I do not understand where to even begin in a problem like this one. Please help me to understand how to reach the answer and why it is so. Thank you! :)
Let (f)x = �2x + 4 and g(x) = �6x � 7. Find f(x) � g(x)
Click here to see answer by fcabanski(1391)

Question 708326: How do you factor 8x^3-27=0
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Question 709128: Please help me solve these equations please! Thank you!
Let f(x)= 2x+3 and g(x)=x^2-x Find Each Value

Problem 1: (f+g)(1/2)

Problem 2: (f*g)(1)

Problem 3:(f/g)(2)

Problem 4: (f of g) (5)
Click here to see answer by josgarithmetic(39613)

Question 709286: Hi I have been trying to figure this out for hours. The problem says to "Determine a relation between the x and y-values. Write an equation.". The x-values are 1,2,3,4,5 and the y-values are 2,5,8,11,14. Please help me figure this out. Your help is much appreciated! Thanks!!
Click here to see answer by stanbon(75887)

Question 709273: Find the sum of the first eight terms of the arithmetic series 3 + 5 + 7 + 9 +...
Click here to see answer by josgarithmetic(39613)

Question 709394: How do I Find the equation of a secant line containing the given points: (5, f(5)) and (7, f(7)) with the given function F(x)=4x-8?
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Question 709433: Given f(x) = 2x - 1 and g(x) = 2/x+1 for x>-1, find fg(5)
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Question 709492: IS Y=6 A FUNCTION. WHY OR WHY NOT?
THANK YOU.
Click here to see answer by jim_thompson5910(35256)

Question 709500: I'm trying to solve the following:
f(x)= 1 devided by
(3x+1)^5
How is this solved? does it have a special name,I mean the type of problem?
Id like to search for more to practice. thanx
Click here to see answer by josgarithmetic(39613)

Question 709576: Determine the domain and the range of the function. f(x)=sqrt( 3x-2)

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Question 708781: Let f(x)=ax^7+bx^6+cx^3-dx+e, where a,b,c,d, and e be real numbers and a ≠0. Determine the degree, maximum number of turning points, maximum number of zeroes (x-intercepts), maximum number of y-intercepts, and the leading coefficient.
Click here to see answer by jmicsko(1)

Question 710216: use f(x)=3x-1 and g(x)=1-x^2 to solve f(g(x))
Click here to see answer by MathLover1(20849)

Question 710227: A function f(x)=-8x^2 what is f(-3)
Click here to see answer by nerdybill(7384)

Question 710293: How do I find the Domain and range of this function?
f(x)=2x^2 - x +1
Click here to see answer by solver91311(24713)

Question 710470: suppose that for some function g, g(x+5)=3x+2. find g(-2)
Click here to see answer by Gogonati(855)

Question 710603: HI,I NEED TO KNOW HOW TO FORM EQUATIONS.
Thank You
Click here to see answer by MathLover1(20849)

Question 710617: what is the value of of the function h(6)? H(6) = 3x - 4
Click here to see answer by Alan3354(69443)

Question 710715: 4�(7^x) = 5.5(e^ −3x)
Click here to see answer by Alan3354(69443)

Question 710677: if f = {(2,5), (3,6),(4,-2), (a,b)} is a function. Which of the following could be (a,b)?
Click here to see answer by Edwin McCravy(20054)

Question 711149: Find the domain of the function: f(x) = 4x^1/3

Click here to see answer by srinivas.g(540)

Question 711343: Find the Following:
g(x)=3x^2+5
g(a-5)
g(a-5)=g(a-5)^2+5
The square kind of throws me off...what do I do?
Click here to see answer by lynnlo(4176)

Question 711569: f(x)=1-4x-x^2
Express the quadratic function in standard form
Click here to see answer by josgarithmetic(39613)

Question 711646: Use the function below to find F(5). Use the slash ( / ) to enter fractions if necessary.
F(x)=1/7*3x

Click here to see answer by tutor_paul(519)

Question 711707: Please help me solve this equation:
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Question 711810: I missed a class when sick and now have no idea what or how to do problems that say: Write the domain of the given function using interval notation.
f(x)= x-3
Click here to see answer by jim_thompson5910(35256)

Question 711798: suppose f is a Function that to each positive number v, assigns the amount of time it takes a car, going v miles, to go 120 miles. Is F an increasing function a decreasing function or neither? Explain.
This is confusing to me, there are several problems like this. Can anyone explain? Thank you :)
Click here to see answer by jim_thompson5910(35256)

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, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760, 5761..5805, 5806..5850, 5851..5895, 5896..5940, 5941..5985, 5986..6030, 6031..6075, 6076..6120, 6121..6165, 6166..6210, 6211..6255, 6256..6300, 6301..6345, 6346..6390, 6391..6435, 6436..6480, 6481..6525, 6526..6570, 6571..6615, 6616..6660, 6661..6705, 6706..6750, 6751..6795, 6796..6840, 6841..6885, 6886..6930, 6931..6975, 6976..7020, 7021..7065, 7066..7110, 7111..7155, 7156..7200, 7201..7245, 7246..7290, 7291..7335, 7336..7380, 7381..7425, 7426..7470, 7471..7515, 7516..7560, 7561..7605, 7606..7650, 7651..7695, 7696..7740, 7741..7785, 7786..7830, 7831..7875, 7876..7920, 7921..7965, 7966..8010, 8011..8055, 8056..8100, 8101..8145, 8146..8190, 8191..8235, 8236..8280, 8281..8325, 8326..8370, 8371..8415, 8416..8460, 8461..8505, 8506..8550, 8551..8595, 8596..8640, 8641..8685, 8686..8730, 8731..8775, 8776..8820, 8821..8865, 8866..8910, 8911..8955, 8956..9000, 9001..9045, 9046..9090, 9091..9135, 9136..9180, 9181..9225, 9226..9270, 9271..9315, 9316..9360, 9361..9405, 9406..9450, 9451..9495, 9496..9540, 9541..9585, 9586..9630, 9631..9675, 9676..9720, 9721..9765, 9766..9810, 9811..9855, 9856..9900, 9901..9945, 9946..9990, 9991..10035, 10036..10080, 10081..10125, 10126..10170, 10171..10215, 10216..10260, 10261..10305, 10306..10350, 10351..10395, 10396..10440, 10441..10485, 10486..10530, 10531..10575, 10576..10620, 10621..10665, 10666..10710, 10711..10755, 10756..10800, 10801..10845, 10846..10890, 10891..10935, 10936..10980, 10981..11025, 11026..11070, 11071..11115, 11116..11160, 11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660