# Posts by beth

Total # Posts: 852

**Math**

But I was wondering- is it possible to use the (f•g)'= f'(g(X))*g(X)' and still obtain the same answer? For the composite rule, we sub u into the dv/du equation and then take the derivative of that ONCE. Then we multiply that entire function by pi which is the...

**Math**

This looks right! Thanks so much!!

**Math**

If f(u)=u+1/(cos^2u) , u=g(x)=pi(x), x=1/4 , find the derivative of f(g(x)). I can't seem to get this one, step by step please?

**Math**

A line 'l' intersects line 'm' at point A at 45 degree angle. B and C are points on line m, where the distance from B to A is equal to the distance from A to C. How many points on line 'l' are equidistant from points B and C? How is it one point? And ...

**Math**

Derivative of y=sec(tanx)? I don't get how it is secxsecx*secxtanx*tanxtanx. Where does an extra tanx come from? Derivative of sec(tanx) is just secxtanx*tanx (and then multiply the inside as well so)* sec^2(X) as derivative of tanx. I have 2 tanx, where did the third one ...

**Math**

So the answer is supposed to be sin(2x)/(1+cosx)^3 but I was wondering for the numerator why the distributive law doesn't apply when we would multiply the derivative of the outside with the inside?

**Math**

Wait sorry, you just expanded. But shouldn't it be sin times sin? Not sin times cos? Since derivative of the 1+cos is -sin and the numerator is a sin?

**Math**

I think you did the quotient rule wrong. Should be minus not plus

**Math**

Find the derivative of y=(sinx/(1+cosx))^2. I used the chain rule, but the second part involved the quotient rule which gives a very complicated expression that u do not know how to simplify. Could you please give me a detailed step by step solution for the simplifying part? ...

**Math**

So I found the derivative of an expression and I cannot figure out how to simplify the final answer into the desired form. I got -csc^2(X)/(1+cotx)^2. Now how do I simplify this into -1/(sinx+cosx)^2. Help, it's killing me ahha. Thanks!

**Math**

Wait sorry, scratch all of that. How did you get df/dg????

**Math**

Could you please explain how dg/dx is 6 over 2times square root of x?

**Math**

Was wondering where the y and X came out of? I thought it was just f and u?

**Math**

find value of (f•g)'(x) at x=1 for f(u)=cot(pi*u/4), u=g(x)=6(square root(x)) By the way, the little dot is supposed to be hollow above, as in f of g of x.

**Math**

Find the equation of the line tangent to curve x=sec(t), y=tan(t), at t=pi/6. I found th slope(derivative of the two which was csc(t). Plugged in Pi/6 and got 2 as the slope. Now how do I find the equation of the tangent? There are like two equations to work with, I'm ...

**Math**

Find values of x for which the piecewise function g(x): 1) (x+1)^2, x=<0 2) 2x+1, 0<x<33) (4-x)^2, x>=3is differentiable. I got xer, x cannot equal 3 and 0, but the answer key only has 3. WHy isn't 0 one either since the derivative is different on either sides?

**Math**

graph is a piecewise; f(x)= 1) 2-2x-x^2, x<0 and 2) 2x+2, x>=0. Determine whether graph has a tangent at x=o. If it does not, explain why not. I have no idea. When I plug in x=0, both equations give 2, but answer key says it does not exist. Explain?

**Math**

how is 2*6.1 equal to 32.2??

**Math**

Free fall equation is s=6.1t^2 ft, where t is in seconds. Assume a rock is dropped from a 100 ft cliff. Find speed of the rock at t=3.5 sec.

**Math**

lim (tanx-2x)/(2x-sinx) as X->0 I have no idea how to manipulate the units and isolate something that will somehow give me -1? Thanks in advance!!

**calculus**

Find the critical numbers x1 and x2 of y=(9x^2+3)/4x.

**calculus**

Use implicit differentiation to find the slope of the tangent line to the graph of 18*x^(1/2)+5y^(1/2)+14 at(81/324,1)

**calculus**

Find the derivative of y=(7x^(1/3))/(x^2+9)

**calculus**

Find the derivative of 4sinx(6cosx+9sinx) at x=¦Ð/6.

**calculus**

Use the Trapezoidal Rule to approximate ¡Ò8 4 ln(x2+5) dx using n=3. Round your answer to the fourth decimal place.

**Chemistry**

Determine the number of moles of N2 that are required to produce 12 mol of NH3 using the equation, N2 + 3H2 --> 2NH3. 12 mol NH3 x 1 mol N2/2 mol NH3 = 6 moles of N2.

**finite math**

discuss the argument that the y-intercept and the x-intercept should each be represented as separate ordered pairs.

**Math**

What is the expected number of rolls of both dice until you get a sum that equals 6? I know that p[sum = 6] = 5/36, but how do I find out: E[# of rolls until the sum = 6] = ? Thanks!!

**Math (algebra)**

Multiply (3x – 7)(3x – 5) A. 9x^2 + 6x + 35 B. 9x^2 + 36x + 35 C. 9x^2 – 36x – 35 D. 9x^2 – 36x + 35 I said it was letter A, but I got it wrong...please help

**Calculus**

The rate of growth dP/ dt of a population of bacteria is proportional to the square root of t with a constant coefficient of 9, where P is the population size and t is the time in days (0¡Üt¡Ü10). The initial size of the population is 700. Approximate the...

**calculus**

Evaluate ¡Ò(1+xe^x)/x dx

**calculus**

Evaluate ¡Ò(9tanxcosx+5)dx

**Math**

Hmm the answer key says 8.1. I got the same answer you did.

**Math**

Light passing through water loses 30% of its intensity every metre of water depth. At what depth will the light intensity be half of what it is at the surface? How is it 8.1? I don't know how. Thanks

**calculus**

A Norman window is constructed by adjoining a semicircle to the top of a rectangular window . (The diameter of the semicircle is the same as the width of the rectangular) If the perimeter of the Norman window is 20 ft, find the dimensions that will allow the window to admit ...

**Math**

I am given a graph and asked to derive the function from it. The answer key says y=(-3x^2-5)/(x^2-25)- use wolfram to graph for your convenience. I got the asymptotes but the -5 constant I don't get where it came from. Someone explain to me how to get that -5 constant?(I ...

**Math**

Why do we have to sub it back into the original function to get 0/0? If we got 0/x then it means it's a vertical asymptote right? and what about the oblique asymptote? We don't worry about it then?

**Math**

What is the: - vertical asymptote -horizontal asymptote -non permissible value of y=(x^2+x-12)/(x+4) ? So this simplifies to a linear function y=x-3. BUT the oblique asymptote is also y=x-3. So does this graph not exist? I am really confused.

**Algebra**

idk

**Math**

What's the volume function?

**Math**

A rectangular piece of metal with dimensions 14 CMA 24 CM is used to make an open box equal squares of side length X centimeters are cut from the corners and sides are folded up a polynomial function that represents the volume, V,of the box is: V(X)=x(14-2x)(24-2x). Determine ...

**Math**

500! is divisible by 21. How many times can 21 go into 500! ? The answer key does not simply state 500!/21 times, and my calculator does not have the capacity to compute such a large sum. Thanks!

**English**

Yes. Is this right?

**English( HELP!)**

The minority of people live as impotent and comply with the majority; the hesitation no longer exists by the State if the majority of just men breathe prison air. Would this be ok?

**English(HELP!)**

Ok thankyou. How about the 2nd part that I recently posted?

**English (HELP!)**

How can I introduce 2 of these quotes with a Full Sentence & a Colon? Quote 1: “A minority is powerless while it conforms to the majority, it is not even a minority then; but it is irresistible when it clogs by its whole weight” (Thoreau 22). Quote 2: “If the ...

**English(HELP)!!**

Nevermind I meant Henry David Thoreau explained the value of revolution by writing, “ men possess personal rights to reject allegiance to the government, however, the majority of the people feel as if their authority is imaginable” (Thoreau 8).

**English**

Henry David Thoreau explained the value of revolution by writing, “ men possess personal rights to reject allegiance to the government” (Thoreau 8.) Is this ok?

**English**

How can I introduce 2 of these quotes with a SUBJECT VERB construction & a COMMA??? QUOTE 1) CITATION> (Thoreau 8). All men recognize the right of revolution; that is, the right to refuse allegiance to, and to resist, the government, when its tyranny or its inefficiency are...

**Math**

Any 2 points determine a line. If there are 6 points in a plane, no 3 of which lie on the same line, how many lines are determined by pairs of these 6 points? The answer key says 15, and the explanation is (6!)/(2!4!). Could someone explain to me why there is a 6, 2, and 4 ...

**Math**

A rectangle is inscribed in a circle of radius r. If the rectangle has length 2x, write the area of the rectangle as the product of two functions.

**Math**

Part a) asked for the equation for the area of rectangle- i got -2x^3+18x. Part b) asked for the equation after a horizontal stretch by a factor of 4- I got the y=2x*(-(1/4x)^2+9).

**Math**

A rectangle is inscribed between the x-axis and the parabola y=9-x^2 with one side along the x-axis. One side in touchin the x- axis and the opposite two vertices touch the parabola. A) Suppose the point (2,5) is the vertex of the rectangle on the original parabola. Use this ...

**Math**

A moving company charges $800 plus $16 per hour. Another company charges $720 plus $21 per hour. How long is a job that costs the same amount for both companies?

**math**

the product of the sum and the difference of two nu8mberts is 105. find the two numbers

**Physics**

An officer is investigating an accident. A car has struck a pedestrian at a school crosswalk.There are no witnesses to the accident. The officer measures the coefficient of friction at the accident site to be 0.55, and he measures skid marks that are 52m long. What is the ...

**English**

Could you help me with this guiding question as well please? "The narrative is interspersed with newspaper clippings and excerpts from official government documents. Why does Kogawa include these in her novel? What is their effect?"

**English**

But how do I get a thesis for a book? Like how should I state my opinion on it? Would my thesis just be- this book excels in perfectly capturing the beauty and harsh realities of this time?

**English**

Doing a book review assignment for Obasan by Joy Kogawa. It cannot be a typical summary , must be more essay like and have a thesis. I plan on discussing first and foremost a general quick plot summary emphasizing the important and prominent scenes of the book, which will fuel...

**Geography-~ Cultures**

Despite this discussion... I literally meant.. how would you respond to this topic or about this topic. I was not referring to the punctuation, grammar, and word usage but yes I'll go back to look through any errors.

**Geography-~ Cultures**

For an assignment, I had to write a discussion so here is my discussion. My question is: How would YOU respond to my discussion in a good college paragraph. With cultural blending and exchange comes a lot of change in a culture. This was acceptable in some areas and ...

**English Language & Composition**

I literally typed the INTRODUCTION that what was on my paper saying the "Iron Curtain" separated Spain so I'm confused. But either way. the point or question is whether I think Orwell was right in saying that our liberties are in danger now. For my essay, I have ...

**English Language & Composition**

Basically I need help with understanding what the question is asking? I need clarification on that in order to write my thesis.

**English Language & Composition**

In this essay there are 6 sources. I would type it out but I doubt that someone will read all the sources to help me out. If you want, I could type every source out. Can someone help me explain what this is asking and how I could make a thesis statement out of it??? Now, the ...

**math**

country A has a growth rate of 3.8% per year. The population is currently 5,592,000 and the land area of country A is 14,000,000,000 sq yds. Assuming this growth rate continues and is exponential, after how long will there be one person for every sq yd of land?

**Physics**

A tourist being chased by an angry bear is running in a straight line toward his car at a speed of 3.24 m/s. The car is a distance d away. The bear is 31.1 m behind the tourist and running at 4.50 m/s. The tourist reaches the car safely. What is the maximum possible value for d?

**Macroeconomics**

(Monetary Control) Suppose the money supply is currently $500 billion and the Fed wishes to increase it by $100 billion. a. Given a required reserve ration of 0.25, what should it do? b. If it decided to change the money supply by changing the required reserve ratio, what ...

**History**

Can you check over my research paper outline for me please?(excluding intro and conclusion- and u know my thesis already at this point haha) Para 1: Discussion of the drug in book called "Soma" that renders all citizens docile and unemotional(they do not even have ...

**History**

In Stalin, Hitler, Mussolini, Franko, along with other totalitarian regimes what actions/situations did each of them practise do which relates to any forms propaganda, direct control of citizens, economic control, and implementation of fear? Could you please provide web links ...

**English(Reed)**

Ms sue what I meant is that history happened, it was not original work of some author.

**English(Reed)**

Oh and also, I was wondering how I can include parenthetical references for history? My teacher says that anything that is prior knowledge does not need to be parenthetically referred to in my paper, but does history and its fact count for that?(I need at least three for my ...

**English(Reed)**

Same post, another question :) If propaganda is analogous to soma(body para 1), then what should I establish for the two other examples in my essay? Would the total control of the citizens' genetic, economic, social, and sexual freedoms be analogous to denial of ...

**English(Reed)**

In addition to examples(maybe it will help you with my request) I can also touch on Hitler's regime when German children were to enroll in youth groups to brainwash the children with the ideas and practices of Nazism.Stalin did something similar with his Great Terror ...

**English(Reed)**

If propaganda is analogous to soma(body para 1), then what should I establish for the two other examples in my essay? Would the total control of the citizens' genetic, economic, social, and sexual freedoms be analogous to denial of independence/direct control/manipulation(...

**English(Reed)**

.. continuing our conversation from my other post regarding Brave New World and totalitarianism research paper :) my response to your comment: Thanks for your opinions Reed, I have thought about it and decided on my stance. My thesis is now "The author, Aldous Huxley, ...

**Management**

Can someone verify my answer please? during a change-planning phase, the change agent communicates information gathered through diagnosis directly to the effected people. this process is called, A. direct feedback B. team building C. evaluation D. sensitivity training My ...

**English**

Ok I won't change my screen name again, my name is bethany, but I just use beth for short and bella to protect my identity- guess I forgot to do it here haha but its ok :p. And thanks for your opinions Reed, I have thought about it and decided on my stance. My thesis is ...

**English**

To answer your question, "So, how can we learn anything from Huxley's obvious exaggerations? What is Huxley saying we should guard against?" is it that Huxley wants to exaggerate the corrupt ideals of totalitarian perspectives on social stability and societal ...

**English**

Does my argument that the legitimacy of his depictions should be critiqued on strong for a research paper on this book?

**English**

I am writing a research paper on Aldous Huxley's Brave New World on the topic "totalitarian perspectives on societal order, control, and social stability" and how (my thesis- my teacher's assignment)the author's depiction is not particularly accurate, ...

**Math**

Mr. Lee invested some money. Lost 4% in a stock and gained 3.2% in a bond. Overall he lost 11.2$. If he invested the amount in the stock to the bond vice versa, then he wouldve gained $3.2, how much is in the bond and how much is in the stock? I got: 0.96x+1.032y=x+y-11.2 0....

**math**

probability of 1/12; one out of twelve chance

**Math**

Mr. Lee took the $1200 he collected fr chinese new yea and invested some in a 6% bond, and the rest at a 4.5% T-bill. The return for the T-bill exceeded thay from the bond by $12. How much was invested at each rate?

**Math help**

Mr. Lee took the $1200 he collected fr chinese new yea and invested some in a 6% bond, and the rest at a 4.5% T-bill. The return for the T-bill exceeded thay from the bond by $12. How much was invested at each rate? Thanks!

**English**

What does the poem "Students" by Tom Wayman mean? I don't understand what the opening lines/sentence means- someone explain? I also don't see the irony of the last stanza either. How is it ironic? I know that it basically shows Wayman and his attempt for ...

**Math**

If you subtract twelve from twice a number, the result is eight. What is the number?

**Pre-Algebra Please do Help !!!**

Which function rule represents the data in the table? x= -3,-2,-1,0,1 y= 1,-2,-5,-8,-11 a. y= -3x-8 b. y= 1/3x-8 c. y= 1/3+8 d. y= 3x +8 i don't know if it is b or c

**English**

Ok thanks for the advice. Though do you think the topic I have chosen is competent for a 1000 word paper(meaning there is enough I can research upon it?)?

**English**

What type of society & government is Brave New World by Aldous Huxley? And what aspect from the novel is relatable to history or modern society? I need to find something to challenge(a topic/idea/argument Huxley made in his novel) and write a research paper to back up my ...

**English**

I don't think foreshadowing was used though, because the story starts with a guy after a driving test, driving his mom around when he meets two terrible accidents in which his mother starts to scream- another twist because the ride was going smoothly until now. Then plot ...

**English**

Ok so there is a plot twist to th story and that is the "twist". But i do't know how the author "intentionally misleads the reader"?

**English**

In the short story "Test" by Theordore Thomas, it is carefully constructed to offer the readers many unexpected twists and turns. Identify these twists and explain how the author intetionally misleads the audience in each case. Please help!! Thank you for your time~

**math**

Marteen wants to paint 2/3 of her room today.She wants to paint 1/4 of that before lunch.How much of her room will she paint before lunch today? A.1/12 B.1/6 C.5/12 D.11/12

**Macroeconomics**

#4 should be B; lower.

**Macroeconomics**

Please check my answers; stuck on a few questions on my homework. 1. In the long run, an increase in the supply of bank loans is matched by a __________ in the price level and the quantity of real loans is __________. A. rise; unchanged B. rise; increased C. fall; unchanged D...

**Macroeconomics**

So now I understand #1. the excess supply occurs when the quantity supplied exceeds the quantity demanded, meaning that producers are willing to sell more than consumers are willing to buy. This causes the price of coffee to fall as firms out the price to sell the coffee.

**Macroeconomics**

can you let me know if I'm on the right path... 1. if it's not A; has to be "D" 2.the only other answer that would make sense is "C" 3. a tradeoff is the balance achieved between two desirable but incompatible features. .. so it's "D"

**Macroeconomics**

working on homework & stuck on these three questions. Someone please check if I answered these correctly; Thank you! 1. In the event of excess supply in the coffee market __________. A. the price of coffee will increase B. the price of coffee will decrease C. the supply of ...

**University of Phoenix**

In the equation y = 4 x, if the value of x is increased by 2, what is the effect on the value of y ?

**stats**

.945