Monday

October 20, 2014

October 20, 2014

Number of results: 18,765

**calc check: euler's method**

Given the differential equation: dy/dx = y(1+x), y(0)=1, Use Euler's method with step size .1 to approximate y(.3). y' = y(1+x), y'(0) = 1(1+0)=1 ->the solution has slope 1 at the point (0,1); x0=0, y0=1, h=0.1, F(x,y)=y(1+x) y1=y0+h*F(x0,y0) y1=1 + 0.1(1(1+0)) y1=1.01 y2=1...
*July 1, 2007 by COFFEE*

**calc check please?**

Given the differential equation: dy/dx = y(1+x), y(0)=1, Use Euler's method with step size .1 to approximate y(.3). ... please check this for me! no one has responded to this question yet.. thanks. y' = y(1+x), y'(0) = 1(1+0)=1 ->the solution has slope 1 at the point (0,1...
*July 2, 2007 by COFFEE*

**Math/Euler's Method**

Consider a cooling cup of coffee whose initial temperature is 205. The room temperature is held at 70. Suppose k = 1/16. Let y be the temperature, and y' its time derivative. ----------------------------------- I have the differential equation: y' = (-1/16)(y-70) Initial ...
*June 7, 2007 by COFFEE*

**calculas**

Consider a cooling cup of coffee whose initial temperature is 205. The room temperature is held at 70. Suppose k = 1/16. Let y be the temperature, and y' its time derivative. ----------------------------------- I have the differential equation: y' = (-1/16)(y-70) Initial ...
*March 12, 2012 by pasta!*

**Calc: euler's method**

Use Euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem below. Give your answer correct to 4 decimal places. y' = 1 - xy y(0) = 0 y(1) = ____ ? ... help, this is what i've done but got the wrong answer.. h = 0.2 x0 = 0 y0...
*June 20, 2007 by COFFEE*

**cal**

Use Euler's method with step size0.4 to estimatey(2) , where y(x) is the solution of the initial-value problem y'=4x+y^2, y(0)=1. . y(2)=
*March 12, 2012 by carlton*

**calculus 2**

Use euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem y'= -3x+y^2, y(0)=1
*March 13, 2012 by Geminese*

**calculus 2**

Use euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem y'= -3x+y^2, y(0)=1
*March 13, 2012 by Geminese*

**calculus**

Use Euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem. y' = 5x + y^2, y(0)=-1.
*March 14, 2012 by Carlton*

**CAL 2**

Use Euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem y'=5x+y^2, y(0)=-1 y(1)=
*March 15, 2012 by Josh*

**Cal**

Use Euler's method with step size 0.2 to estimate y(1), where y(x) is the solution of the initial-value problem. y' = 5x + y^2, y(0)=-1. y(1)=
*March 15, 2012 by McClain*

**calculus**

Suppose f satisfies the differential equation dy/dx=y+1 and f(0)=1. In other words, f′(x)=f(x)+1 and f(0)=1. Use Euler's method with a step size of 0.5 to approximate f(1.5).
*March 12, 2013 by Joe*

**maths**

An initial-value problem is given by the differential equation, f(x,y) = x + y, y(0) = 1.64 The Euler-midpoint method is used to find an approximate value to y(0.1) with a step size of h = 0.1. Then use the integrating factor method, to find the exact value of y(0.1). Hence, ...
*September 29, 2013 by Matthew*

**calculus**

Use the Euler Method with a step size of 0.2 to estimate f(3) where f′(x)=2x−7 and f(2)=4. Your answer should be correct to two decimal places.
*March 9, 2013 by lisa*

**calculus**

Use Euler's method with given values of to obtain an approximation of the initial value problem when x=3 . Round your answers to four decimal places, if necessary. dy/dx= x+y, y(0) =3 n=4, y(3)= n=6, y(3)=
*April 21, 2012 by Anonymous*

**calculus**

use euler's method with delta x=0.1 to estimate y when x=0.4 for the solution curves satisfying y(0)=1 and y(-1)=0. I made the table but i don't know what values to use or plug in.
*December 4, 2008 by kenneth*

**Pre-Calc**

Solve the system of equations using either the substitution method or the multiplication/addition method answer: 3x+2y=14 2x-4y=4
*September 27, 2014 by Anonymous*

**Geometry**

How to construct Euler's line??? Anybody know any good websites or can just explain how to construct the orthocenter centroid and whatever else is in Euler's line????? Im Soooooo confused!!!!
*September 29, 2009 by Delaney*

**Calculus**

Sorry, I need more help! I am reallly struggling with Euler's method, and here's a problem I need help on: y'=2y + sin(x), y(0)=0, dx=0.1, the interval is 0 to 1, and f(x)= [e^(2x)-2sin(x)-cos(x)]/5
*December 18, 2006 by Raine*

**math**

An initial-value problem is given by the differential equation, f(x,y)=x(1-y^2), y(1)=0.07 Use the Euler-trapezoidal method with a step-size h = 0.1, to obtain the approximate value of y(1.1). Give your answer to 4 decimal places.
*September 26, 2012 by enigma*

**calculus**

Use Euler's method with step size .2 to estimate y(.4), where y(x) is the solution of the initial value problem y=x+y^2, y=0. Repeat part a with step size .1
*November 10, 2013 by Bryan*

**math**

An initial-value problem is given by the differential equation, f(x,y) = x + y, y(0) = 1.64 The Euler-midpoint method is used to find an approximate value to y(0.1) with a step size of h = 0.1. Then use the integrating factor method, to find the exact value of y(0.1). Hence, ...
*September 26, 2012 by enigma*

**calc**

find the volume of the solid generated by revolving around the x-axis: y=e^(x-8), y=0, x=0, x=10 So I know you can use the washer method, but the shell method can also be used and it should be better. The issue is I'm not certain how to actually do it. Any help is appreciated!
*January 29, 2013 by Anonymous*

**GEOMETRY**

A __________ __________ touches every vertex exactly once, but does not return to its origin. ________________________________________ A. Hamiltonian circuit B. Hamiltonian path C. Euler circuit D. Euler path
*July 13, 2010 by BOB*

**PSYCHOLOGY**

provide a situation when scientific method, case study method, survey method, Naturalistic observation method, Correlation method, and Experimental method could be applied
*November 20, 2009 by scooby*

**psy210**

psy 210 CheckPoint: Research Methods Research Method Description Application Scientific method Case study method Survey method Naturalistic observation method Correlation method Experimental method
*February 21, 2010 by Anonymous*

**Calculus**

Use Euler's method with step size 0.2 to estimate y(1.4), where y(x) is the solution of the initial-value problem below. Give your answer correct to 4 decimal places. y' = x - xy y(1) = 0 h = 0.2 Since I am at y(1) = 0 and not y(0) = 0 would I just do this twice? As in: y1 = 0...
*June 22, 2007 by COFFEE*

**Psy**

Complate the following chart. The first column shows the name of a research method used in psychology.In the second column, write a brief description of that research method. In the column, provide a situation when this method could be applied. Scientific method, Case study ...
*January 25, 2011 by Nan*

**Calculus**

Given the differential equation: dy/dx = y(1+x), y(0)=1, Use Euler's method with step size .1 to approximate y(.3). y' = y(1+x), y'(0) = 1(1+0)=1 ->the solution has slope 1 at the point (0,1); x0=0, y0=1, h=0.1, F(x,y)=y(1+x) y1=y0+h*F(x0,y0) y1=1 + 0.1(1(1+0)) y1=1.01 y2=1...
*June 26, 2007 by COFFEE*

**calculus**

Given the differential equation: dy/dx = y(1+x), y(0)=1, Use Euler's method with step size .1 to approximate y(.3). y' = y(1+x), y'(0) = 1(1+0)=1 ->the solution has slope 1 at the point (0,1); x0=0, y0=1, h=0.1, F(x,y)=y(1+x) y1=y0+h*F(x0,y0) y1=1 + 0.1(1(1+0)) y1=1.01 y2=1...
*June 29, 2007 by COFFEE*

**Really need help in Calculus Problem?!**

Use Euler's method with step size .2 to estimate y(.4), where y(x) is the solution of the initial value problem y=x+y^2, y=0. Repeat part a with step size .1
*November 10, 2013 by Bryan*

**PSY 210**

Complete the following chart. The first column shows the name of a research method used in psychology. In the second column, write a brief description of that research method. In the third column, provide a situation when this method could be applied. Research Method ...
*November 17, 2008 by MIKE THOMPSON*

**Calculus II**

I have a function RC * dvout/dt + vout = RIin and the initial condition vout(1) = 0 for t = 0 to 7.5. When I set up the equation to be solved using Euler's method, is it: vout = vout + f(vout,t)*step size, with f(vout,t) = (RIin - vout)/RC.
*March 24, 2010 by Jenny*

**Calculus II**

I have a function RC * dvout/dt + vout = RIin and the initial condition vout(1) = 0 for t = 0 to 7.5. When I set up the equation to be solved using Euler's method, is it: vout = vout + f(vout,t)*step size, with f(vout,t) = (RIin - vout)/RC.
*March 24, 2010 by Jenny*

**discrete math **

Consider the graph given above. Add an edge so the resulting graph has an Euler circuit (without repeating an existing edge). Now give an Euler circuit through the graph with this new edge by listing the vertices in the order visited. lrc.alasu.edu/webwork2_course_files/MAT256...
*May 6, 2012 by carlton*

**college mathematics**

9. Create a Euler diagram to determine whether the syllogism is valid or invalid. All children like games. John likes games. John is a child., <--At the beginning of this sentence which is the last sentence is suppose to have three dots shaped like a triangle. (I am having ...
*February 8, 2012 by cody*

**CALC 2 - Partial Functions!!**

How do I solve Integral of 7/(16-x^2) I know I must break down (16-x^2) into (x+4)(-x+4), but after I do that what is next? Using the method of partial fractions, convince yourself that 7/(16-x^2)= (7/8)*[1/(4+x) + 1/(4-x)] The two additive terms can be integrated by the ...
*June 13, 2007 by Ace*

**PSYCHOLOGY answer included**

provide a situation when scientific method, case study method, survey method, Naturalistic observation method, Correlation method, and Experimental method could be applied would collecting DNA be for scientific mthod?
*November 20, 2009 by scooby*

**Pre-Calc/Trig...**

Solve using any method. 1. 2x^2+5x-3=0 2. -x^2+x+1=0
*October 15, 2014 by Anonymous*

**geometry**

determine why Euler's formula continues to hold for the polyhedron formed by cutting corners off of an octahedron. a) for an octahedron V=__, F=__,E=__ b) when you slice off one corner of the octahedron, you (gain or lose)__ edges. C) therefore, the total change in V is __, ...
*December 13, 2010 by m*

**Algebra**

Solving system of linear equations by using the apropiate method name the method and the x,y coordinates 1)X=4y+8 2x-8y=-3 2)3x-7y=6 elimination method 2x+7y=4 (2,0) 3)5x-2y=12 elimination method 3x-2y=-2 (7,23/2) 4)9x-8y=42 elimination method 4x+8y=-16 (2,-3) 5)X=4y+8 ...
*December 1, 2008 by Chris*

**Pre Calc**

x^2+y=9, x-y+3=0. Need to solve using substitution method.
*May 18, 2010 by Keith*

**Pre Calc**

x^2+y=9, x-y+3=0. Need to solve using substitution method.
*May 18, 2010 by Keith*

**pre calc**

solve following using "elimination method" 3x^2 + 4y = 17 2x^2 + 5y = 12
*May 19, 2010 by Keith*

**Calc**

how do I solve this arcsin(4/5) note that I am not looking for about 53 degrees I believe I'm suppose to solve euler's formula for x i.e. sin (x) = (e^(ix) - e^(-ix))/(2i) where x is in radians hence I would do something like this sin (x) = (e^(ix) - e^(-ix))/(2i) = 4/5 (e^(ix...
*July 20, 2010 by Kate*

**Math**

Truth tables are related to Euler circles. Arguments in the form of Euler circles can be translated into statements using the basic connectives and the negation as follows: Let p be gthe object belongs to set Ah. Let q be gthe object belongs to set Bh All A is B is ...
*April 26, 2010 by Deb*

**math**

Truth tables are related to Euler circles. Arguments in the form of Euler circles can be translated into statements using the basic connectives and the negation as follows: Let p be gthe object belongs to set Ah. Let q be gthe object belongs to set Bh All A is B is ...
*April 27, 2010 by Deb*

**please check**

5 x < - 25 can you check. 5x<-25 25 -------- 0 so that equals x < 0 and i have a question is my teacher trying to find a method or an answer from me?
*January 7, 2008 by Taylor*

**Biostatistic**

An enzymatic method for determining alcohol in wine is evaluated by comparison with a gas-chromatography (GC) method. the same sample is analyzed several times by both methods with the following results (% ethanol). Enzymatic method: 13.1, 12.7, 12.6, 13.3, 13.3. GC method: 13...
*December 20, 2012 by Jam*

**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 ...
*February 6, 2013 by Nick*

**accounting**

1) Straight-Line Method 2) Declining-Balance Method 3) Double-Declining-Balance Method 4) Sum-of-the-Year's digits Method What are the main characteristics of each method and in what situation would you use each of these methods?
*February 15, 2009 by China*

**accounting**

1) Straight-Line Method 2) Declining-Balance Method 3) Double-Declining-Balance Method 4) Sum-of-the-Year's digits Method What are the main characteristics of each method and in what situation would you use each of these methods?
*February 18, 2009 by China*

**Halfway solved-calc **

So I'm trying to solve this problem but one thing I don't get is, how do I know which method to use just by looking at the graph (disk, washer, or shell)? Find the volume of the solid generated by revolving the region bounded by the graphs y=x^2- 4x+ 5 and y= 5-x about the ...
*May 22, 2013 by Hannah*

**Science**

A repair shop tested two methods(a & B) of replacing a broken roller. In testing method A, these times in minutes were measured (5 trials), 2,4,9,3,2. In testing methods B, these times in minutes were measured (6 trials), 3,7,5,8,4,3. Use the 0.10 significance level, and ...
*December 19, 2011 by Debra *

**creative activities in other curriculum areas**

which one of the following methods is preferred for teaching songs from recordings to young children? a-the phrase-wise method b-the whole-song method c-the combination method d-the strong-melody method
*December 6, 2010 by nikki*

**Calc**

The volume of the solid obtained by rotating the region enclosed by y=e^(5x)+2 y=0 x=0 x=0.7 about the x-axis can be computed using the method of disks or washers via an integral A=? b=? V=?
*May 3, 2014 by Josh*

**business**

If creditors give you no credit for payments made during the billing period, this is called the: A. APR method. B. discount method. C. previous balance method. D. adjusted balance method. My choice is A, but Im a little confused.
*September 26, 2012 by clara*

**calc**

how do you start this problem: integral of xe^(-2x) There are two ways: 1) Integration by parts. 2) Differentiation w.r.t. a suitably chosen parameter. Lets do 1) first. This is the "standard method", but it is often more tedious than 2) You first write the integral as: ...
*May 15, 2007 by walex*

**Numerical method - numerical integration**

Evaluate the following integration: I(f) = integral sign from 0 to 20 of e^(-x) dx 1. Analytically 2. Rectangle method with h= 10,5,4,2,1. 3. Mid-point method with h= 10,5,4,2,1. 4. Trapezoidal method with h= 10,5,4,2,1. 5. Simpson's method with h= 10,5,4,2,1. 6. Using ...
*October 31, 2010 by Anonymous*

**Numerical method - numerical integration**

Evaluate the following integration: I(f) = integral sign from 0 to 20 of e^(-x) dx 1. Analytically 2. Rectangle method with h= 10,5,4,2,1. 3. Mid-point method with h= 10,5,4,2,1. 4. Trapezoidal method with h= 10,5,4,2,1. 5. Simpson's method with h= 10,5,4,2,1. 6. Using ...
*November 1, 2010 by Anonymous*

**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?
*January 17, 2007 by George*

**Economics**

Verify Eulers theorem for the function f(x,y)=30(x^0.5)(y^1.5)-2(x^3)(y^(-1))
*May 6, 2010 by Anonymous*

**math**

What is e? I know it is Euler's constant and the natural number whatever but what is it?
*November 16, 2012 by mushroomhelper*

**MATH STUCK:-(**

I am having some difficulties factoring polynomials and I use only one method to figure the stuff out, which is the guess and check method because it's just mental math work and not that complicating. Here is a question that I know how to do, and below it I will list down the ...
*November 15, 2010 by Anonymous*

**calc: avg value**

Find the average value of the function "f(x) = x^2 sqrt(1+x^3)" on the interval [0,2]. and this is what i did.. please check for mistakes. thanks :D f(x) = x^2 sqrt(1+x^3), [0,2] f ave = (1/(b-a))*inegral of a to b for: f(x) dx f ave = (1/(2-0))*integral of 0 to 2 for: x^2 ...
*July 2, 2007 by COFFEE*

**personal finances **

If creditors add finance charges after subtracting payments made during the billing period, this is called the: A. APR method. B. average daily balance method. C. previous balance method. D. adjusted balance method. its not A or D someone help me
*April 17, 2014 by tony*

**PSYCHOLOGY answer included**

provide a situation when scientific method, case study method, survey method, Naturalistic observation method, Correlation method, and Experimental method could be applied scientific= collecting dna case study= Where the psychologist asks the patient of the back ground history...
*November 20, 2009 by scooby*

**calc**

correction: 9/25(u+7)u^11 du = 9/25(u^12 + 7 u^11) du and you can easily integrate this indefinate integral of 9x(5x-7)^11 dx using the u substitution method: i know u= (5x-7) but when i use this the x in the 9x doesn't cancel thus x= (u+7)/5. however when i put this in the ...
*December 4, 2006 by Count Iblis*

**Pre-calc/Trig...**

which of the following are quadratic functions? check all that apply 1. y=2x^2-3x+7 2. y=3x-4 3. y=(5x-3x^2)/4+1 4. y=x-x^3
*October 8, 2014 by Anonymous*

**math**

Can someone please check my work? Solve using substitution method 1. 3x+2y=12 x=52-6y answer:-40.8 I am pretty sure that one is wrong. Solve using elimination method 2. 2r-7s=-31 7r+2s=24 answer: (230/53,-468/53) 3.3x+4y=3 6x+8y=6 answer: No answer. problems eliminate eachother
*January 6, 2009 by deedee*

**Math**

Compute 2^1000(mod 121) using Euler.
*August 2, 2012 by Jonathan*

**Math**

Show that Euler's formula holds for a right pentagonal prism.
*January 7, 2010 by Michelle*

**Geometry**

Show that Euler's formula holds for a right pentagonal prism.
*February 19, 2010 by Nicole*

**numerical methods**

x = 2x + 3y , x(0) = -2.7 y = 2x + y , y(0) = 2.8 [ 0 , 1 ] h = 0.05 EULER, RK4 AND TRAPEZOIDAL.. FIRST 10 ITERATION ONLY
*April 12, 2012 by zefron*

**pre-calc HELP PLEASE**

solve using identities for all angles (dont use multiple angle method)show work please cuz i am so confused. 2sin2x-3sinx=0
*April 24, 2012 by Kimberly*

**Pre-Calc-please check**

Please check this for me expand (3z-2b)^5 using Binomial Theorem (a+b)^n = n on top sigma in middle k=0 to right (n/k)a^(n-k)b^k (3a-2b)^5 = 5 on top sigma in middle k=0 on bottom(5/k)(3a)^5-k(-2b)^k (5/0)(3a)^5(-2b)^0+(5/1)(3a)^4(-2b)^1 +(5/2)(3a)^3(-2b)^2 +(5/3)(3a)^2(-2b)^3...
*January 4, 2012 by Bethany*

**pre calc**

find the exact solution algebraically and check it by substituting into the orginal equation. 1. 36(1/3)^x/5=4 2. 32(1/4)^x/3=2
*June 12, 2011 by caleb*

**Microeconomics**

Check and correct my answers please. Thank you. Trunks owns a junk yard. He can use one of two methods to destroy cars. The first method involves purchasing a hydraulic car smasher that costs $200/year to own and then spending $1 for every car smashed into oblivion. The second...
*October 14, 2009 by Anonymous*

**math**

Systems of equations can be solved by graphing or by using substitution or elimination. What are the pros and cons of each method? Which method do you like best? Why? What circumstances would cause you to use a different method?
*July 1, 2008 by yolanda*

**Algebra**

Systems of equations can be solved by graphing or by using substitution or elimination. What are the pros and cons of each method? Which method do you like best? Why? What circumstances would cause you to use a different method?
*March 4, 2008 by John*

**MATH**

SYSTEMS OF EQUATIONS CAN BE SOLVED BY GRAPHING OR BY USING SUBSTITUTION OR ELIMINATION. WHAT ARE THE PROS AND CONS OF EACH METHOD? WHICH METHOD DO YOU LIKE BEST? WHY? WHAT CIRCUMSTANCES WOULD CAUSE YOU TO USE A DIFFERENT METHOD?
*February 4, 2009 by Davisha*

**algebra**

o Systems of equations can be solved by graphing or by using substitution or elimination. What are the pros and cons of each method? Which method do you like best? Why? o What circumstances would cause you to use a different method?
*January 26, 2010 by lacey*

**pre calc**

find exact solution algebraically and check it by substituting into the original equation. 2(10^-x/3)=20 logtiny4(x-5)=-1
*June 12, 2011 by celeste *

**Finite Math - Simplex Method**

I think I have a good understanding of how to set up the problems but and solve them but I am not constant yet with getting the correct answer. Is there a way to check the answer? I am doing an online math class and it would be nice if I could check before I commit. Thanks
*June 24, 2012 by Robson*

**Math**

Show that Eulers formula holds for the polyhedra described in A right pentagonal prism
*March 11, 2010 by Anonymous*

**math**

A polyhedron has 6 faces and 4 vertices. Use Euler's formula to calculate the number of edges.
*June 8, 2014 by lily*

**math**

The total amount of interest on a loan of $6,000 for 150 days is 210.50.Using the ordinary interest method,what is the rate of interest on this loan?Round answer to the nearest hundredth. I know the ordinary interest method is 360 days. My anwser is 8.42% Could someone check ...
*January 10, 2011 by Bonnie*

**math**

SYSTEMS OF EQUATIONS CAN BE SOLVED BY GRAPHING OR BY USING SUBSTITUTION OR ELIMINATION. WHA ARE THE PROS AND CONS OF EACH METHOD? WHICH METHOD FO YOU LIKE BEST? WHY? WHAT CIRCUMSTANCES WOULD CAUSE YOU TO USE A DIFFERENT METHOD?
*February 4, 2009 by DAVISHA*

**Alegebra 1**

HELP PLEASE!! Show that Eulers formula holds for the polyhedra called a right pentagonal prism?
*August 14, 2009 by Christina*

**Math**

Use Eulers formula to answer the question. A polyhedron has 12 edges and 6 faces, how many vertices does it have?
*February 10, 2011 by Rena*

**Calculus**

I have tried calc-chat's method and I always get the answer 12 units but the answer should be 69 according to my key! What do I need to do to get there?? "Use the limit process to find the area of the region between f (x)=10x+8 and the x-axis on the interval [0,3]"
*May 24, 2011 by Christiana*

**CALC**

Use Newton's method to approximate a root of the equation x3+x+3=0 as follows. Let x1=1 be the initial approximation. The second approximation x2 is _____? and the third approximation x3 is _____?
*May 29, 2010 by Adam*

**Accounting**

A check returned by a bank because the issuer's cash account balance could not cover the check is called a(n): a. Cancelled check b. Certified check c. Outstanding check d. NSF check
*October 18, 2012 by Anton*

**calc asap!**

can you help me get started on this integral by parts? 4 S sqrt(t) ln(t) dt 1 please help! thanks! Integral t^(1/2)Ln(t)dt = 2/3 t^(3/2)Ln(t)- 2/3 Integral t^(1/2) dt = 2/3 t^(3/2)Ln(t) - 4/9 t^(3/2) Simpler method: Integral t^(a)dt = t^(a+1)/(a+1) Integral d/da [t^(a)]dt = d/...
*June 7, 2007 by Woof*

**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 ...
*October 7, 2008 by Elizabeth*

**Pre-Calc/Trig...**

Which of the following quadratic functions has a graph that opens downwards? check all that apply A. y=2x^2-9x+3 B. y=x^2+4x+8 C. y=-(5+2x^2) D. y=60x-15x^2
*October 9, 2014 by Anonymous*

**math**

Use Eulerʹs formula to answer the question. A polyhedron has 36 edges and 21 faces. How many vertices does it have?
*October 29, 2009 by jeng*

**math**

Describe what happens to the three points of concurrency that determine the Euler line when the triangle is (a) isosceles, (b) equilateral.
*January 24, 2010 by BB*

**calc check**

<<y=(1/A)*integral from a to b of: (1/2)[f(x)]^2 dx >> If that is the y value of the center of mass, I don't know why the factor (1/2) is there I also don't agree with your calculation of the x value, which should be 1/(ln 2). I agree with you that the area is ln 2...
*June 29, 2007 by drwls*

**Agility training**

Please check my answer thanks :) Why is time-plus-faults scoring used for a Steeplechase event? A. It's the only method that penalizes for mistakes. B. Both emphasize the speed of the dogs. C. The other two scoring methods are for Standard Classes only. D. It's easier to break...
*January 13, 2009 by Mallie*

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