Wednesday

April 16, 2014

April 16, 2014

Number of results: 38,898

**MINIMIZATION PROBLEM (CALC)**

n-7w
*Saturday, October 30, 2010 at 3:55pm by Anonymous*

**MINIMIZATION PROBLEM (CALC)**

total area= PIr^2+ ((9-2r)/4)^2 so find r when dA/dr=0 lengths of two pieces: 2r, 9-2r you will get two solutions, one for min area, one for max area.
*Saturday, October 30, 2010 at 3:55pm by bobpursley*

**calc 3**

A. You can assume symmetry between length and width, which reduces to the width(=length) and the height. Furthermore, one of the two can be eliminated from the volume relation: w^2h=500000 So the minimization problem is reduced to one single dimension as in elementary calculus...
*Sunday, November 6, 2011 at 8:49pm by MathMate*

**Calc**

Can someone help me with this calc problem? lim as x->0 (tan^3 (2x))/(x^3)
*Thursday, January 8, 2009 at 4:22am by Nick*

**MINIMIZATION PROBLEM (CALC)**

A wire 9 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total area of both figures...
*Saturday, October 30, 2010 at 3:55pm by Pierre*

**MINIMIZATION PROBLEM (CALC)**

A wire 9 meters long is cut into two pieces. One piece is bent into a square for a frame for a stained glass ornament, while the other piece is bent into a circle for a TV antenna. To reduce storage space, where should the wire be cut to minimize the total area of both figures...
*Saturday, October 30, 2010 at 3:55pm by Pierre*

**Science**

What are waste minimization components?
*Monday, November 5, 2007 at 6:10pm by J*

**Maths**

There is a point (P) on the graph of [x^2+y^2- 136 x + 12 y + 4560 = 0] and a point(Q) on the graph of [(y + 6)^2 = x^3 - 116 x^2 - 417 x + 267460] such that the distance between them is as small as possible. To solve this problem, we let ((x,y) be the coordinates of the point...
*Thursday, November 19, 2009 at 5:41pm by Salman*

**Math**

There is a point (P) on the graph of [x^2+y^2- 136 x + 12 y + 4560 = 0] and a point(Q) on the graph of [(y + 6)^2 = x^3 - 116 x^2 - 417 x + 267460] such that the distance between them is as small as possible. To solve this problem, we let ((x,y) be the coordinates of the point...
*Thursday, November 19, 2009 at 6:37pm by Salman*

**Calculus**

There is a point (P) on the graph of [x^2+y^2- 136 x + 12 y + 4560 = 0] and a point(Q) on the graph of [(y + 6)^2 = x^3 - 116 x^2 - 417 x + 267460] such that the distance between them is as small as possible. To solve this problem, we let ((x,y) be the coordinates of the point...
*Thursday, November 19, 2009 at 6:37pm by Salman*

**Maths**

There is a point (P) on the graph of [x^2+y^2- 136 x + 12 y + 4560 = 0] and a point(Q) on the graph of [(y + 6)^2 = x^3 - 116 x^2 - 417 x + 267460] such that the distance between them is as small as possible. To solve this problem, we let ((x,y) be the coordinates of the point...
*Friday, November 20, 2009 at 3:59am by Salman*

**Math**

There is a point (P) on the graph of [x^2+y^2- 136 x + 12 y + 4560 = 0] and a point(Q) on the graph of [(y + 6)^2 = x^3 - 116 x^2 - 417 x + 267460] such that the distance between them is as small as possible. To solve this problem, we let ((x,y) be the coordinates of the point...
*Friday, November 20, 2009 at 3:59am by Salman*

**Calculus**

There is a point (P) on the graph of [x^2+y^2- 136 x + 12 y + 4560 = 0] and a point(Q) on the graph of [(y + 6)^2 = x^3 - 116 x^2 - 417 x + 267460] such that the distance between them is as small as possible. To solve this problem, we let ((x,y) be the coordinates of the point...
*Friday, November 20, 2009 at 4:00am by Salman*

**Science**

What locality? How bad is what? Minimization?
*Tuesday, November 6, 2007 at 9:07pm by drwls*

**Calc or Pre calc**

I am having trouble doing this problem. I know how to do indefinate integrals, but I don't know how to do definate integrals. Can you show me how to do this. Evaluate 5 (x^3-2x)dx 2
*Wednesday, May 14, 2008 at 9:42pm by jennifer*

**Science**

How is waste minimization bad locally in USA?
*Monday, November 5, 2007 at 10:57am by J*

**Science**

Topic: Waste Minimization How bad is it locally (USA)?
*Tuesday, November 6, 2007 at 9:07pm by J*

**Pre-Calc**

I'm stuck on a pre-calc problem. I need to find y as a function of x, where the constant c is a positive number for In(y-1)+In(y+1)= -x+c express your question as ln[(y-1)(y+1)] = -x+c change that to exponential form e^(-x+c) = (y-1)(y+1) e^(-x+c) = y^2 - 1 y^2 = e^(-x+c) + 1 ...
*Wednesday, May 9, 2007 at 12:36pm by Sarah*

**Math**

If (a,-3) is a point on the graph of y=x^2+4x, what is the value of a? so far i have -3=x^2+4x i can do the problem on my graphing calc but we can't use a graphing calc on the test so i need to know how to do it by hand. what do i do next?
*Wednesday, January 20, 2010 at 10:29pm by Karen*

**Operations research**

36) Consider the following minimization problem: Min z = x1 + 2x2 s.t. x1 + x2 ≥ 300 2x1 + x2 ≥ 400 2x1 + 5x2 ≤ 750 x1, x2 ≥ 0 What is the optimal solution?
*Sunday, December 12, 2010 at 5:07pm by Pauline*

**Micro economics**

Consider a firm with the following production function: q = (ak+bl)^(1/2) The firm's total costs can be written as C = F + rk + wl 1. Calculate the firm's contingent factor demand. Illustrate it in a graph including the firm's isoquant map 2. Assume that r/w > a/b. Find the...
*Tuesday, April 8, 2014 at 7:16am by Rasmus*

**last calc question, i promise!**

ALSO ALSO ALSO - on my first calc question (a couple posts down!), i added more to the problem that i forgot, so i need help with that too.
*Friday, February 20, 2009 at 12:26am by jane*

**Calc**

A student is in a 20 week calc class. The function f(t)=50-50e^0.2t f(t) measures the students problem speed in t weeks -how many problems per hour can a student solve at the beginning of the course - how many problems per hour can a student solve halfway through the course -...
*Friday, July 20, 2012 at 2:07pm by Marshall*

**Pre Calc**

use properties of the trigonometric function to find the exact value of each expression. Do no use a calculator. sec ( - pi/18) * cos (37 pi)/18 I do not see how to do this problem. Every time I do it out I get a reference angle of twenty degrees which isn't on the unit circle...
*Friday, November 13, 2009 at 2:40pm by Pre Calc*

**Pre-Calc (ugent!!!)**

haha is this a last minute calendar problem by any chance? because it's october tomorrow and i have have this problem too! lets hope somebody answers soon...
*Wednesday, September 30, 2009 at 9:59pm by seth*

**calc**

what will i do for f(b) in problem c
*Sunday, October 4, 2009 at 2:41pm by kim*

**College microeconomics**

Need some help with these questions....Thanks in advanced. All profit-maximizing firms hire inputs up to the point where: A) MRP = W B) MR = MC C) MP = W D) MFC = MRP E) MFR = MRC 4) A firm’s marginal revenue product of labor curve A) is steeper than its demand curve for labor...
*Tuesday, April 14, 2009 at 7:43pm by sue*

**pre-calc**

oops! don't know why I put AP Calc, it's actually pre-calc....
*Friday, September 18, 2009 at 8:52pm by muffy*

**ap calc**

OOPS, I meant Pre-Calc not ap Calc sorry
*Saturday, October 10, 2009 at 2:45pm by MUFFY*

**pre calc**

how will that help me solve the problem
*Thursday, October 29, 2009 at 6:14pm by kim*

**Calc 2**

Read the terms of your problem!
*Monday, April 18, 2011 at 1:24pm by Mgraph*

**finite math**

when doing minimization problems and there is more than one negative constant in the far right column is there a method for choosing the proper one to go with or is the process entirely arbitraru
*Sunday, March 4, 2007 at 3:50pm by chris*

**Calc**

This is a very confusing problem for me y = 5^3^x^2 Find y'
*Wednesday, October 21, 2009 at 2:59am by Joe*

**Pre Calc**

Oh so there is something wrong with the problem! Thanks
*Friday, February 12, 2010 at 9:40pm by Phillip*

**Calc**

I need help solving this problem. logbase5(x+2)=2
*Tuesday, July 12, 2011 at 8:08pm by Leanna*

**pre calc**

for the second problem what is th height??
*Thursday, August 30, 2012 at 2:01pm by Rebekah*

**Pre Calc**

I have no idea how to do this problem I thought you would have to do something with the diagonals but not sure... The parallel sides of a trapezoid are 4 and 10 centimeters long and the oblique sides are 8 and 12 centimeters long. Fi9nd the angles and the area of the trapezoid
*Monday, October 5, 2009 at 1:43pm by Pre Calc*

**C code**

Write a .c file named calc that: - Takes arguments from the command line - Solves a simple math problem - Returns the result as an exit status calc.c: //this is the function that gets called when the executable is run. int main(int argc, char * argv[]){ //I've given you the ...
*Wednesday, February 6, 2013 at 9:04pm by Nick*

**pre calc**

what are some point for the problem y=1/2x+2
*Tuesday, September 15, 2009 at 6:15pm by jasmine*

**calc**

y=ln(x+1) +ln(x-1) find dy/dx I have trouble with this problem since i'm not that familar with finding the derivative when they involve ln. Please show me how to solve this problem. I should have gotten 2x/(x^2-1)
*Wednesday, January 17, 2007 at 4:28pm by Brian*

**pre calc**

how do i tackle this problem?!? cosx=sinx*cotx
*Tuesday, February 9, 2010 at 7:00pm by jill*

**Calc.**

Solve the initial value problem explicity: y'= 5xe^(-y), y(1)=1
*Wednesday, February 2, 2011 at 8:42pm by Tania*

**Calc**

Im working on same problem..... sorry no help here
*Thursday, October 28, 2010 at 11:36pm by Sarah*

**calc**

I am not certain I would make that assumption on the problem. However, you could be right.
*Sunday, September 19, 2010 at 12:00pm by bobpursley*

**Calc - font problem**

what is ã ? also, add some parentheses. It's not clear what f(x) is
*Wednesday, August 29, 2012 at 3:54pm by Steve*

**Calc II**

i know they are both convergent but idk how to do the second part of the problem
*Wednesday, November 7, 2012 at 3:24pm by Anonymous*

**pre-calc help !!!!!!!**

if someone could show me how to solve this problem 1) cos(345°)
*Wednesday, November 28, 2012 at 9:47pm by Haley*

**Calc**

Find the integral from -∞ to -1 of 1/(1+x²) dx. I started working the problem out, and so far I got the lim as z→-∞ of [arctan (-1) - arctan (z)]. I'm a little bit confused exactly what is means when you plug -∞ into z, and how to solve the problem from...
*Monday, October 24, 2011 at 3:24am by Erica*

**Pre Calc**

Can someone help me understand how to do this: I need to find two solutions to the problem (x-2)^2 + (y+3)^2 = 9
*Sunday, March 15, 2009 at 9:01pm by Anonymous*

**pre calc**

your answer is wrong.... redo the problem and move 1.5 and make it 5.125
*Saturday, October 24, 2009 at 3:51pm by Thomas*

**CALC**

thank you so much for the clear explanation. i really understand how to do the problem now! i appreciate it!
*Saturday, May 29, 2010 at 8:34pm by Adam*

**Calc II**

Can anyone just give me an idea on how to go about solving this problem
*Wednesday, November 7, 2012 at 3:24pm by Lauren*

**Math**

Is there a typo, both foods have the same nutrition content, so there is no minimization to be done. Ch(x,y)=5x+5y C(x,y)=15x+15y≥300 Ca(x,y)=x+y≥13 Fe(x,y)=2x+2y≥40
*Saturday, February 26, 2011 at 10:43pm by MathMate*

**Calc**

Reiny is correct; I did not fully read the problem and assumed the shore was perpendicular to the beam
*Sunday, November 11, 2007 at 2:32pm by drwls*

**calc**

I have the same exact workshop problem. Need help. It is written exactly as above.
*Monday, November 30, 2009 at 11:16pm by Kkozl*

**Pre-Calc**

Please help me with this problem-I'm stuck (x-2)/(x+2) = (x+10)/x I'm not even sure where to start-Thanks for any help you can provide
*Sunday, September 18, 2011 at 1:34pm by Josh*

**Pre-Calc/Math**

no problem lol this one almost had me stump for alittle
*Monday, April 30, 2012 at 12:23am by visoth*

**Calc**

For y sec(x) = 3x tan(y), the direction above it says "Regard y as the independent variable and x as the dependent variable and use implicit differentiation to find dx/dy." I do now know if that makes any different and I believe I have 4 lives left. For the x3 + y3= 27 problem...
*Monday, October 26, 2009 at 3:10am by Patrick*

**calc**

cylindrical shells the problem says rotate about the x-axis these are the two equations given: x+y=3 AND x-4=-(y-1)^2
*Monday, February 1, 2010 at 1:58am by robert*

**physics**

Well it's a bit too late for that. I'm already in Calc 2 so is there anyway you can just explain this problem to me so I can finish my work.
*Sunday, August 15, 2010 at 9:35am by Skyler*

**MATHS**

A CONE WAS CONSTRACTED FROM PLASTIC, HAVE A HEIGHT OF 20cm (PART C). THE LID IS MADE UP OF HEMISPHERE HAVE RADIUS 0F 5cm (PART A) AND PYRAMID HAVE VOLUME OF 81,667cm³. THE LID FITS EXACTLY OVER THE CONE. A) CALC. THE VOL. OF PART A. B) CALC. THE VOL. OF PART C. C) CALC. THE ...
*Monday, August 9, 2010 at 8:16am by MTHOMBENI BAFANA*

**Studying for Calc**

I have a quiz on derivatives coming up and I really want to do well, but i'm not sure how to go about studying calc. i have no trouble studying for other subjects, but i'm doing poorly in calc and i need to make some changes in my study habits. any suggestions? i usually work ...
*Tuesday, October 7, 2008 at 4:22pm by Elizabeth*

**calc**

oh! ok! thank you! so then m=6 and the equation of the tangent line would be y=6x Thank you!
*Tuesday, September 14, 2010 at 2:41pm by calc*

**PRE-CALC**

Actually, there are no parenthesis. The problem is how I wrote it but sqrt x-7 is over x^2 -5x - 6 I factored it to (x-6) (x+1)
*Monday, September 21, 2009 at 8:41pm by MUFFY NEEDS MORE HELP*

**Pre-Calc/Calc**

Looks like C to me
*Wednesday, April 17, 2013 at 11:05am by Steve*

**college calc**

can you please help me with this one problem i am supposed to fine the intercepts of the graph of the equation. 16y^2=120x-225
*Sunday, January 30, 2011 at 11:14pm by bren*

**Science**

The topic is waste minimization. One of the questions that i need information on is this: How bad is it locally (USA)? In case locally in USA. Whats bad waste.
*Tuesday, November 6, 2007 at 9:33pm by Plez Help!:"(*

**Math (Pre-Calc)**

never mind...I got the first problem figured out. The second is still stumping me however.
*Friday, November 30, 2007 at 4:27pm by Bryan*

**calc**

Consider the function f(t)=2sec^2(t)–10t^3. Let F(t) be the antiderivative of f(t) with F(0)=0. Then F(2) my problem is i get 2tan(t)-5/2t^4+c i plug in 2 and dont get the right answer please help
*Friday, June 5, 2009 at 11:35pm by sonia*

**calc**

f(x)=8cos4x What is the derivative? Im doing online homework and i keep getting an incorrect answer. How do you work out this problem correctly? thanks
*Monday, April 26, 2010 at 11:14pm by Adam*

**Calc 121**

Okay, how would you go about finding the area of a curve from 1 to 4, when y=2x+(2/(x^2))?? It's not like the problem I asked before because here, you cannot use substitution. I tried using 2x for u and x^2 for du but it won't simplify into a ln problem or anything that I can ...
*Saturday, April 21, 2007 at 10:50pm by Me*

**Chemistry**

A .682 g sample of an unknown weak monoprotic acid, HA, was dissolved in sufficient water to make 50mL of solution and was titrated with a .135 M NaOH solution. After the addition of 10.6mL of base, a pH of 5.65 was recorded. The equivalence point was reached after the ...
*Wednesday, May 9, 2007 at 2:45pm by Sara*

**calc**

If 4x2+3x+xy=2 and y(2)=–10 , find y'(2) by implicit differentiation. i keep getting the wrong answer for this problem evn when plugging 2 in for y.
*Thursday, May 8, 2008 at 11:56pm by sara*

**calc**

If 4x2+3x+xy=2 and y(2)=–10 , find y'(2) by implicit differentiation. i keep getting the wrong answer for this problem evn when plugging 2 in for y.
*Friday, May 9, 2008 at 12:07am by sara*

**Calc.**

After all that, I confused myself and did the wrong problem I think. IF your problem is |x cos(x^2) dx just like your 2nd reply says, ignore the above. I wrote down | x cos (x^2) but integrated | x cos^2 x dx So, your very first post IS correct if it is cos x^2 and not cos^2 x...
*Thursday, January 27, 2011 at 7:37pm by helper*

**Pre Calc**

Does this: sqrt 3x-4=(x-4)^2-3 Multiply out to: x^4-16x^3+90^2-211x+173 I then need to put it in the graphing calc and see what the roots are.
*Thursday, September 10, 2009 at 8:34pm by muffy*

**Calc**

You need parentheses. Is your problem, y = (cubert(x)) + 2 y = (cubert(x + 2))
*Monday, February 7, 2011 at 1:11am by helper*

**pre-calc**

Find a vector perpendicular to the plane containing the given points. (0,-2,2), (1,2,-3), and (4,0,-1) My teacher was unable to finish the lesson, but I'd like to know how to solve this problem.
*Wednesday, February 17, 2010 at 8:24pm by James*

**Pre-Calc**

f(x)=(24x3+68x2+24x−32)/(4x3+56x2+236x+280) I need help finding the roots and the hole for this problem.
*Sunday, September 30, 2012 at 9:52am by Richard*

**calculus (limits)**

lim h>0 sqrt(1+h)-1/h not sure how to factor this; not allowed to use L'Hopital's Rule. (that isn't taught at my school until Calc II & I'm in Calc I).
*Saturday, January 22, 2011 at 2:09pm by John*

**Calc 1**

I need help solving for this final problem to complete my assigment. Please help! Solve for x: ln(x^4)-ln(x^2)=2
*Monday, September 24, 2012 at 12:28am by arcos15*

**Calc-Derivative**

Find the derivative of x^(1/x). Can someone show me steps for this problem...I go round in circles
*Sunday, December 9, 2012 at 7:07pm by Anon*

**trig-reply to Reiny**

It's actually the end of an integration problem from a college calc text I have from 1971. The problem involved Weierstrass Substitution. The part I posted was after converting from the u-substition to an answer in terms of x. The orig prob. is integrate (cos x )/(3 cos^2 x - ...
*Monday, January 3, 2011 at 8:36pm by Carol*

**Pre-Calc**

I am seeking help with this problem Please...Thank you! Find the point on the line y=x+3 in the xy-plane that is closest to the point (3, 2)
*Tuesday, December 7, 2010 at 8:55pm by Roy*

**calc**

No table of data was provided. Even if it had been, you will probably not get much help here unless you show that you have done some thinking about the problem.
*Tuesday, May 20, 2008 at 10:44pm by drwls*

**Pre Calc**

sigh...sorry I'm so lost...we are not actually going over this know in school, this is just a practice problem, so yeah if you could please explain again? thnaks
*Thursday, December 17, 2009 at 7:51pm by jake*

**calc II**

You do not really have a problem. There are two ways to do a partial fraction with multiple factors in the denominator, and you have combined the two. For the multiple factor of (x+1)², you could either assume B/(x+1)+D/(x+1)² or (Cx+D)/(x+1)² In your particular...
*Sunday, December 6, 2009 at 9:59pm by MathMate*

**Math (Pre-Calc)**

So for the first the answers would be pi/3, pi, 5pi/3? I tried it for the second problem and I couldn't make it work.
*Friday, November 30, 2007 at 4:27pm by Bryan*

**Calc I**

Thanks for your response. I was hardly taping my foot. I have been working on this problem for almost 6 days and by the time I posted this, I was over it. So I apologize if it seemed like I was impatient.
*Sunday, June 30, 2013 at 6:04pm by Coolio*

**help chem!:/**

a) Calc. PH of 0.010 M HF and 0.030 M KF e) calc. PH Zn(OH)2 in wAter
*Thursday, March 15, 2012 at 9:03pm by ALISON*

**PLEEEEEEASE HELP, EMERGENCY!!!!!**

Here is a word problem dealing with The Simplex Method: Maximization, Minimization A dietitian is designing a daily diet that is to contain at least 60 units of protein, 40 units of carbs, and 120 units of fat. The diet is to consist of two types of foods. One serving of food ...
*Wednesday, October 25, 2006 at 10:32pm by Dolores*

**Maths**

You can graph it, if you calc is a graphing calc. graph y=x^2+8x+5, where it crosses the x axis, is the solutions.
*Thursday, September 17, 2009 at 6:00pm by bobpursley*

**Calc**

f*g = (√x)(sin x) Since f is not defined for x<0, that leaves us with [0,4pi) Both f and g are continuous everywhere defined, so there's no problem with their product.
*Monday, January 13, 2014 at 4:55pm by Steve*

**Calc**

I did the problem. I found the fluid force to be 54 times the integral from -3 to 0 of (-y)(2)(root(9-y^2)dy my final answer was 972 pounds. Is that correct? note from my work: h(y)=-y L(y)=2x=2root(9-y^2)
*Saturday, December 14, 2013 at 1:20pm by Ethan*

**Calc pt2**

Original question: Posted by Lost One on Tuesday, March 5, 2013 at 12:04pm. Let f(x) = (2/3)x^3 - 2x + 1 with a restricted domain of [1,infinity]. What is the value of (f-1)'(x) when x = 13? •Calc - Steve, Tuesday, March 5, 2013 at 12:58pm since x = f^-1(y) and dx/dy = 1/y' f...
*Tuesday, March 5, 2013 at 2:25pm by Lost One*

**Pre-Calc**

I am stuck solving this problem, any help please..Many thanks find all numbers x that satisfy the given equation ln(2x) ------- =2 ln(3x)
*Thursday, December 9, 2010 at 1:08am by Roy*

**math, calc 2**

Using the disk method, find the volume of a right circular cone with height h and base radius r. I know the answer is 1/3pier^2h, but how do you explain or work out the problem?
*Wednesday, January 17, 2007 at 3:14pm by George*

**pre Calc.**

Describe the behavior of the function near the vertical asymptote. Is there another way to word this problem so that I might understand? Seriously, I have gotten everything so far, so is this just worded weird?
*Monday, November 1, 2010 at 8:53pm by L.*

**Extrema-Calc**

Find and classify the relative maxima and minima of this function f(x)= definite integral sign where a=0 and b=x. t^2-4/(1+(cos^2(t)) dt what should my value for u be? is it just t. not sure how to even tackle this problem.
*Wednesday, May 15, 2013 at 12:47am by Eric*

**Calc**

y=ln(x+1) +ln(x-1) find dy/dx I have trouble with this problem since i'm not that familar with finding the derivative when they involve ln. Please show me how to solve this problem. I should have gotten 2x/(x^2-1) The derivative of ln(x) is 1/x So, you obtain dy/dx = 1/(x+1...
*Thursday, January 18, 2007 at 1:36pm by Brian*

Pages: **1** | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | Next>>