Thursday

April 17, 2014

April 17, 2014

Number of results: 16,709

**Maths - Integration**

use integration by parts twice to get ∫x^2 e^2x dx = 1/4 e^2x (2x^2 - 2x + 1) so, 1/4 (e^2 - 1)
*Wednesday, December 12, 2012 at 10:48am by Steve*

**Maths - Integration by parts**

Integral x^2 sin(x) dx
*Wednesday, November 7, 2012 at 11:58am by Anonymous*

**Maths - Integration by parts**

oops log [√(x^2+1)*(x-1)^2]
*Wednesday, December 12, 2012 at 10:53am by Steve*

**Maths -Integration by parts**

Intergral square root of x sin(x) dx
*Wednesday, November 7, 2012 at 11:57am by Anonymous*

**Maths - Integration by parts**

Use the partial ractions to find The integral (3x^2-x+2)/(x-1)(x^2+1) dx
*Wednesday, December 12, 2012 at 10:53am by Anonymous*

**cal**

What methods have you been taught for this kind of integration ? Do you know how to do integration by parts ?
*Monday, December 23, 2013 at 12:45pm by Reiny*

**math**

integration by parts - Integration of x^2 ln(x^3+2)
*Wednesday, February 23, 2011 at 4:05pm by zooey*

**Calculus - Integration by Parts**

I do not believe you can do this in one integration-by-parts step. You must use the method twice. Let y = 2x and dx = dy/2, to simplify the problem to (1/2)∫e^y*sin(y)dy Next, let e^y = u and dv = siny dy du = e^y dy and v = -cos y (1/2)∫e^y*sin(y)dy = (1/2)*uv -(1...
*Wednesday, May 18, 2011 at 2:14am by drwls*

**integration**

sqrt2 times e^t times t^(1/2) dt bounded between 0 and 1. i tried integration by parts.. but it keeps repeating.. please help. thank you!
*Thursday, August 27, 2009 at 5:29am by tiff*

**Calculus - Integration by Parts**

Please help me solve this integration problem. I don't understand how to do it. Thank you! ∫e^(2x)*sin(2x)dx
*Wednesday, May 18, 2011 at 2:14am by Emma*

**Math**

In case the integration is giving you fits, use integration by parts with u = cot^-1(x) dv = dx to get x cot^-1(x) + 1/2 ln(1+x^2)
*Thursday, April 19, 2012 at 6:30am by Steve*

**Maths - Integration by parts**

the integrand is x/(x^2+1)+2/(x-1) so integral is 1/2 log (x^2+1) + 2 log(x-1) = log [√(x^2+1)/(x-1)^2]
*Wednesday, December 12, 2012 at 10:53am by Steve*

**Math Integration**

Integration by parts is basically using the formula ∫u(dv/dx)dx = uv - ∫v(du/dx)dx In the case of I=∫f(x)dx where f(x)=e^(bx)cos(x)dx, you can apply repeated application of the formula (two times), to end up with a term -b^2∫f(x)dx on the right hand side. By ...
*Friday, November 20, 2009 at 2:04pm by MathMate*

**maths**

If in some integration, I see the derivative of the base sitting there either directly or as a multiple, the integration becomes routine. so intgr x^2(x^3 - 6)^3 = x^2/(4(3x^2))(x^3 - 6)^4 + c = (1/12)(x^3 - 6)^4 + c check it by differentiating, it works.
*Sunday, November 15, 2009 at 12:02pm by Reiny*

**calc**

evaluate the integral: y lny dy i know it's integration by parts but i get confused once you have to do it the second time Leibnitz rule (a.k.a. product rule): d(fg) = f dg + g df y lny dy = d[y^2/2 ln(y)] - y/2 dy ----> Integral of y lny dy = y^2/2 ln(y) - y^2/4 + const. ...
*Wednesday, May 23, 2007 at 5:29pm by marsha*

**Math - Indefinite Integration**

Use integration by parts to solve: I = f (x^3)(e^(x^2)) dx (Let "f" represent the integral) Let u = (e^(x^2)), dx = (1) / (2x(e^(x^2))) du Let dv = x^3, v = (x^4) / (4) I = (1/4)(x^4)(e^(x^2)) - (1/4) f (x^3) (2(e^(x^2))) du ... and now I don't know what to do. I don't know ...
*Monday, February 9, 2009 at 6:00pm by Anonymous*

**Maths-Integration by Partial Fraction**

Use integration by partial fractions to find Integral (3x^2-x+2)/(x-1)(x^2+1) dx
*Wednesday, December 12, 2012 at 6:15pm by Anonymous*

**Quick Calc Question**

Yes, you can do integration by parts. Another way is to integrate e^(xy) and then differentiate the answer w.r.t. x. Integral of e^(x y)dy = 1/x e^(xy) + c Differentiate both sides w.r.t. x: Integral of ye^(x y)dy = (y/x - 1/x^2) e^(xy) + c' If you use this method then the ...
*Sunday, November 4, 2007 at 4:18pm by Count Iblis*

**maths**

3/8 means , 3 parts out of 8 parts of anything, in this case, full day or 24 hours. So divide 24 hours into eight equal parts. So 24/8 is 3. Now take three parts of it. That is 3 parts of 3 lots. The answer is 9 hours.
*Sunday, March 15, 2009 at 5:27am by Neil*

**Maths mst**

The net distance (displacement) is INTEGRAL v(t) dt. Do that integration, and solve for a. Accelerlation is d/dt of v(t) y(t)= INT v (dt) . Intial position willbe teh constant of integration.
*Saturday, May 10, 2008 at 5:00pm by bobpursley*

**Math**

The best method here is integration by parts. Most of the times when you see products of functions AND the product of one with the others derivative gives a simple to integrate function. Do you see that [ln(x)]' = 1/x. And when you multiply it with a power of x you get a power...
*Monday, April 25, 2011 at 1:55pm by Anonymous*

**Integration**

1. [integration] (3x+7sin(x))^2 dx i tried 3 different methods of integration but all of my answers are wrong. 2. [Integration]from 0 to 5 (3w-3)/(w+6)dw i divided the numerator by the denominator and then tried to solve the question but im getting the wrong answer.
*Tuesday, November 2, 2010 at 11:10pm by AY*

**calculus **

reverse the order of integration integration 1-e integration 0-lnx dy dx
*Thursday, January 12, 2012 at 3:32pm by ali*

**Maths - Integration by Parts**

Question 1 e^2x Cos(4x) dx Question 2) x sin(x) dx Question 3) x^2 sin(x) dx
*Wednesday, November 7, 2012 at 10:15am by Anonymous*

**Integration by parts**

integrate (e^x-x)^2 dx
*Wednesday, July 13, 2011 at 9:55am by Steff*

**calculus**

How do you find: the Integral of arcsin(1 / (sqrt x^2 - 1) ) dx ?? (The integral of arcsin of one over the squareroot of x squared minus 1) So far, I've used trig integration to simplify down to arcsin(1/tanb) *secbtanb b is theta Then, I've used integration by parts. But i'm ...
*Monday, October 13, 2008 at 6:38am by Cindy*

**math**

Integration of x^2 ln(x^3+2) | = integration symbol | x^2 ln(x^3 + 2) w = x^3 + 2 dw = 3x^2 1/3 dw = x^2 1/3 | ln(w) dw Integration by parts | u dv = uv - | v du u = ln(w) dv = dw du = 1/w dw v = w 1/3 | ln(w) dw = 1/3 ln(w) w - 1/3 | w 1/w dw = 1/3 w ln(w) - 1/3 | w/w dw = 1/...
*Wednesday, February 23, 2011 at 4:05pm by Helper*

**Calculus 2**

integral of xarctanxdx using integration by parts.
*Wednesday, September 26, 2012 at 3:19pm by Heather*

**cal**

use integration by parts: ∫(x-2)e^x dx = (x-3)e^x
*Monday, December 23, 2013 at 1:05pm by Steve*

**Calculus **

1. C is Correct Integration by parts, ∫xcos(3x)dx =(1/3)xsin(3x)-(1/3)∫cos(3x)dx = .... 2. Same as 1. Use integration by parts ∫xe2xdx =(1/2)xe2x-(1/2)∫e2xdx =...
*Saturday, March 12, 2011 at 7:09pm by MathMate*

**calculus**

Use integration by parts to evaluate the integral of x*sec^2(3x). My answer is ([x*tan(3x)]/3)-[ln(sec(3x))/9] but it's incorrect. u=x dv=sec^2(3x)dx du=dx v=(1/3)tan(3x) [xtan(3x)]/3 - integral of(1/3)tan(3x)dx - (1/3)[ln(sec(3x))/3] - [ln(sec(3x))/9] What am I doing wrong?
*Saturday, August 30, 2008 at 6:05pm by Integration by Parts*

**calculus**

The antiderivative of arctan(4t)dt by integration of parts.
*Monday, February 28, 2011 at 10:21pm by Kate*

**Calculus B**

The antiderivative of ln(2x+1) using integration by parts.
*Monday, February 28, 2011 at 10:18pm by Brandon*

**maths**

Split 597 into three parts such that these are in A.P. and the product of the two smallest parts is 796.
*Friday, September 20, 2013 at 2:01pm by partha*

**calculus**

Use integration by parts to find ∫ 2x e-x dx.
*Monday, March 11, 2013 at 3:02pm by mikey2*

**brief calc**

evaluate the integral using integration by parts 7xe^-x
*Tuesday, November 19, 2013 at 12:03am by kyle*

**calculus**

An interesting problem! In fact, it would make a good exam question, because you need to know four rules to calculate the integral, or equivalent to four short questions. (cos(4x)+2x^2)(sin(4x)-x) =cos(4x)sin(4x)-xcos(4x)+2x²sin(4x)-2x³ 1. cos(4x)sin(4x) use ...
*Saturday, May 21, 2011 at 1:43pm by MathMate*

**CALCULUS**

USE INTEGRATION BY PARTS TO FIND EACH INTEGRAL ƪx^5 Lnx dx
*Wednesday, July 6, 2011 at 3:28pm by renee*

**Calculus**

Use integration by parts to evaluate the integral xsqrt(2x+6)dx.
*Thursday, September 26, 2013 at 12:45pm by Taylor*

**maths**

integral of x^n dx = (1/(n+1)) x^(n+1) in general integral of x^-2 dx = (1/-1) x^-1 which is( 1/x ) + constant of integration the right side is -k t + constant of integration 1/x = -k t + c x = 1/ (-kt+c) undefined when kt = c
*Friday, December 14, 2007 at 7:01pm by Damon*

**CALCULUS**

USE INTEGRATION BY PARTS TO FIND EACH INTEGRAL ƪxe^2x dx
*Wednesday, July 6, 2011 at 3:26pm by renee*

**calculus**

USE INTEGRATION BY PARTS TO FIND EACH INTEGRAL ƪx lnx dx
*Wednesday, July 6, 2011 at 3:29pm by renee*

**Cal**

USE INTEGRATION BY PARTS TO FIND EACH INTEGRAL ƪxe^2x dx
*Wednesday, July 6, 2011 at 7:36pm by renee*

**Calculus**

Use either substitution or integration by parts to evaluate the integral: ∫(x+2)/(x+2) dx Thank you!!
*Tuesday, October 18, 2011 at 9:08pm by Erica*

**Calculus**

How do I integrate (x^2)(e^(x^3)) dx? I think it is integration by parts but after trying that, I got confused?
*Wednesday, December 14, 2011 at 9:08pm by Anonymous*

**Calculus**

Try integration by parts. You will have to do it twice. Be very careful, it is so easy to make mistakes in these kind of messy questions. Here is an example very similar to yours http://www.sosmath.com/calculus/integration/byparts/Example3/Example3.html Notice the switch in ...
*Thursday, November 11, 2010 at 11:08pm by Reiny*

**Calculus**

How do I go about integrating sin[x^(1/3)]dx?? I tried doing integration by parts and I'm going in circles.
*Friday, February 13, 2009 at 12:23am by Hannah*

**Calculus**

How do I evaluate this integral: x^9cos(x^5)dx Hint: First make a substitution and then use integration by parts.
*Sunday, February 22, 2009 at 9:37pm by J*

**cal**

USE INTEGRATION BY PARTS TO FIND EACH INTEGRAL ƪsquare rootx lnx dx
*Wednesday, July 6, 2011 at 7:37pm by renee*

**calculus**

How do I integrate x(arctanx) dx? Is it some sort of integration by parts? Can you please show steps? Thanks in advance!
*Thursday, December 15, 2011 at 12:02am by W*

**Calculus 2**

just like regular trig functions, use integration by parts to get x arcsinh(x) - √(x^2+1)
*Thursday, October 4, 2012 at 10:40am by Steve*

**Calculus**

how about you try this one? what do you get? hint: let u = e^3x and you have u sinu, use integration by parts
*Saturday, November 10, 2012 at 1:39am by Steve*

**Maths**

what is the integration of dx/Cos^4(x)
*Wednesday, September 7, 2011 at 10:00am by Deepak*

**Calculus**

If i use integration by parts can i take out 1/4 from the integral and make u=sin^2(16x) and dv=dx ?
*Friday, November 30, 2012 at 8:20pm by Anonymous *

**culteral Diversity**

In Milton Gorton's theory of assimilation, the crucial step is from a. Integration to acculteration b. Acculteration to integration c. Assimilation to plurism d. Anglo-conformity to the melting pot e. Integration to intermarriage
*Saturday, December 19, 2009 at 8:57am by Andrea*

**chemistry**

The urine of horses are mixed with an excess of hydrochloric acid, after some time, a yellowish-brown crystalline precipitate, which have an unpleasant odor, that can't be removed by simply washing with water. This new compound has the following composition (parts by mass): ...
*Wednesday, September 11, 2013 at 3:41am by Ad*

**calculus**

how to take the integral of cos(square root of x) dx. need to use substitution and integration by parts but I don't know what to substitute
*Monday, January 21, 2008 at 7:49pm by sarah*

**Calculus**

average value is area under the curve divided by the interval length what do you get? Use integration by parts for x lnx
*Saturday, November 26, 2011 at 5:51pm by Steve*

**calculus-integration**

integrate -2/xln^4(x)...plz help me..give me an idea on how to start..plz The derivative of the ln(x) function is 1/x and this is multiplying the ln^4(x). You can thus write the integral as: -2 * 1/5 ln^5(x) + constant. is that the answer? wut about the x infront of ln^(x)......
*Monday, May 7, 2007 at 1:03pm by Maria*

**calculus**

The following definite integral can be evaluated by subtracting F(B) - F(A), where F(B) and F(A) are found from substituting the limits of integration. \int_{0}^{4} \frac{1600 x +1200 }{(2 x^2 +3 x +1)^5}dx After substitution, the upper limit of integration (B) is : and the ...
*Saturday, March 8, 2014 at 6:00pm by ricky*

**maths**

use an iterated integral to find area of region bounded by graphs sin(x) and cos(x) between x=pi/4 and x=5*pi/4 but using HORIZONTAL strips.(i.e dxdy is order of integration for the double integral). it has been suggested by a textbook that this is a formidable task. easy ...
*Friday, August 13, 2010 at 8:00am by arron hamilton*

**Math Integration**

i keep getting stuck and i think im missing something integrate by parts e^(bx) cos x dx thanks
*Friday, November 20, 2009 at 2:04pm by Amelia*

**Calculus II**

the gamma function r(x) is defined by r(x)= integral from 0 to infinity of x^n-1(e^-1)dx where n>0. Use integration by parts to show that r(n+1)=nr(n).
*Monday, April 7, 2014 at 5:03pm by chelsea *

**drwls & Damon - maths**

My first suggestion was to try the method of "integration by parts", but that may not work. I found a recursion formula for the integral in my Table of Integrals, but it ends up requiring the integral of e^-x/x , which is a new fucntion called the exponential integral, Ei(x). ...
*Saturday, December 29, 2007 at 9:45pm by drwls*

**Maths- Integration by partial fractions**

Integral (3x^2-x+2)/(x-1)(x^2+1) dx
*Wednesday, December 12, 2012 at 6:10pm by Anonymous*

**integration by parts**

s- integral s ln (2x+1)dx ? = ln(2x+1)x - s x d( ln (2x+1)) = ln(2x+1)x- s x [(2x+1)'/ (2x+1)] dx = ln(2x+1)x- s x [(2)/ (2x+1)] ?... then i'm confused... "ln(2x+1)x- s x [(2)/ (2x+1)] ?... then i'm confused..." x [(2)/ (2x+1)] = 2x/(2x+1) = (2x+1-1)/(2x+1) = 1-1/(2x+1) B.t.w...
*Saturday, February 17, 2007 at 1:05pm by nicholas*

**Calculus**

Use integration by parts to find the integral. Round the answer to two decimal places if necessary. (x+4)^ln x dx between 3 and 0
*Wednesday, November 23, 2011 at 11:56am by Jane*

**CALC**

After integration by parts I got -te^-t - e^-t which from 0 to 5 gave me -5e^-5 - e^-5 - [0 - e^0] = -5e^-5 - e^-5 + 1
*Thursday, November 11, 2010 at 11:12pm by Reiny*

**Calculus 2**

ok thankyou! i wasn't sure if i had to use integration by parts or if there was another method. thankyou!!!
*Thursday, October 4, 2012 at 10:40am by Heather*

**Competetion help on Integration**

If there four options are given to a Defenite Integration then what shortcut trick we should choose to get the correct answer. Like in Indefinte Integration we find the differtation of the answer to reach the function given to integrate. You can try to eliminate some answers ...
*Monday, February 12, 2007 at 10:22am by Nitin*

**Calculus**

Use integration by parts to find the given integral: ∫_9^1 (7t - 42)e^(7 - t) = [-28(1 + e^8)] / e^2 Is my answer correct? or... is it.. = -70e^(-2) + 14e^6
*Tuesday, March 3, 2009 at 7:36pm by Anonymous*

**3rd grade**

alice folded a piece of paper into 12 equal squares and colored them. She had 3 times as many red parts as green parts and 2 more yellow parts than blue parts. How many parts did she have of eeach color?
*Tuesday, January 20, 2009 at 5:33pm by tee*

**antiderivative**

i need help with finding anti derivative of -2xe^x +y-6x^2 dx so i use the integration by parts to solve for -2xe^x?
*Wednesday, October 8, 2008 at 3:08pm by allison*

**Calculus B**

The Antiderivative of: x(arctanx)dx It's clearly integration by parts with u=arctanx and dv=x, but after that I go down hill. HELP!
*Monday, March 28, 2011 at 8:25pm by Brandon *

**calculus**

INTEGRATION BY PARTS... 1) e^5t sin 3t dt 2) xe^3x dx 3) x sec^2 x dx **anybody can help me for this question?
*Tuesday, December 4, 2012 at 12:09am by kchik*

**Maths - Integration**

Find the exact value of the intergal with limits 1 and 0 respectively for the x^2 e^2x dx.
*Wednesday, December 12, 2012 at 10:48am by Anonymous*

**maths**

integration of upperlimit 1and lower limit -1 the function 2x+3/(x^3=3x +4)dx
*Wednesday, March 13, 2013 at 12:10pm by Anonymous*

**Quick Calc Question**

I can't remember how to integrate ye^ey with respect to y. Is it (y^2)e^xy? or do i need to do integration by parts? i just cant remember.
*Sunday, November 4, 2007 at 4:18pm by Michael*

**Calculus II**

Evaluate the integral using method of integration by parts: (integral sign)(e^(2x))sin(5x)dx
*Sunday, February 22, 2009 at 6:06pm by Kurai*

**maths**

Divide 22 into (3+1) parts to get 5.50 for each part. Berry gets 1 part, so 5.50. How much does abby get (3 parts)?
*Sunday, June 5, 2011 at 5:12pm by MathMate*

**Calculus**

First make a substitution and then use integration by parts to evaluate. The integral of (x^9)(cos(x^5))dx What do you substitute first? I do not understand what they are asking for. Please help. thanks!
*Thursday, November 11, 2010 at 11:11pm by Adam*

**Calculus**

First make a substitution and then use integration by parts to evaluate. The integral of (x^9)(cos(x^5))dx What do you substitute first? I do not understand what they are asking for. Please help. thanks!
*Tuesday, November 16, 2010 at 2:43am by Adam*

**Calc**

First find the intersections between the two curves, they are the limits of integration. They can be found readily as x=±2. Next, we check that the curves do not cross the axis y=-1 between the limits of integration. Otherwise the limits of integration must change. Now ...
*Thursday, December 15, 2011 at 7:15pm by MathMate*

**calculus II SURFACE AREA Integration**

Except for the limits of integration :-)
*Monday, October 31, 2011 at 4:28pm by Steve*

**Mathematics**

A machine takes 4.2 hours to make 7 parts. At that rate, how many parts can the machine make in 28.8 hours 48 parts 41 parts 172 parts 17 parts
*Wednesday, November 21, 2012 at 3:18pm by Nono*

**Calculus - integration**

integration1-e integration 0-lnx y dy dx
*Monday, November 1, 2010 at 10:39pm by ali*

**Calculus**

As I noted in my original answer, there is an inconsistency in the specified limits of integration or "boundaries" of your enclosed area. The spiral curve r = 2 theta starts at theta = 0 and ends at theta = 1.5 pi. The straight line theta = pi is the -x axis. It is not clear ...
*Saturday, February 6, 2010 at 4:17am by drwls*

**math(easy integration)**

find the integration of absolute x from -4 to 2? could anyone show me the way to get 10? thanks
*Friday, May 27, 2011 at 8:40pm by ja*

**physics**

So what is your question? This is an integration problem. Draw the figure, and do the integration. Use symettry.
*Monday, April 7, 2014 at 5:36am by bobpursley*

**Math**

First of all, you have to visualize what the surface of revolution is. You get it by rotating a line (straight or curved) 360 degrees about an axis, like the outside of a vase or pot being made on a lathe or potter's wheel. Draw yourself a figure with the three lines plotted. ...
*Thursday, December 13, 2007 at 11:25am by drwls*

**Calc ..basic integration**

I forgto how to integrate...its been to long. integration(Sqrt(1+2t^2+t^4))
*Thursday, February 18, 2010 at 1:22am by mm*

**3rd grade**

There are 3 yellow parts, 1 blue parts, 2 green parts and 6 red parts.
*Tuesday, January 20, 2009 at 5:33pm by Nicole*

**Calc**

Use integration by parts to evaluate the integral. ∫ from 1 to 4 of (√x) (ln√x) dx Im not really sure what to choose for u and dv. Thank you so much for the help!!
*Tuesday, October 18, 2011 at 8:45pm by Erica*

**integration**

Hint: If you plot the function, you will see readily that it is more a problem of trigonometric identities than integration.
*Sunday, January 2, 2011 at 8:54am by MathMate*

**math**

use integration by parts to prove the following reduction formula: |cos^nx dx =1/n cos^(n-1)xsinx +(n-1)/n |cos(n-2)xdx
*Thursday, February 24, 2011 at 10:54am by daniel*

**Maths**

Integration By substitution ive been given this equation int x^2(x^3-6)^3 dx using u = x^3 -6 but i dont understand how to do it please help
*Sunday, November 15, 2009 at 10:25am by Amelia*

**maths**

Integration by substitution ive been given this equation int x^2(x^3-6)^3 dx using u = x^3 -6 but i dont understand how to do it please help
*Sunday, November 15, 2009 at 12:02pm by Amelia*

**Calculus**

I have to use integration by parts to integrate tan^-1 (1/x)dx. I'm not sure what to use as u or dv. We were taught to use uv-integral of (vdu) to do this.
*Wednesday, February 15, 2012 at 12:15am by Elaine*

**calculus**

Use integration by parts to evaluate the definite integral. Intergral: xsec^2(6x) dx I set u=sec^2(6x) and dv=x, but the problems seems to get harder as I go on.
*Friday, February 27, 2009 at 8:18pm by Jake*

**Science**

Why is it rare for the soft parts of an organism to become a fossil? A. the soft parts take a long time to decay. B. the soft parts can be eaten by other animals.* C. the soft parts cannot be buried in sediment. D. the soft parts form petrified fossils.
*Wednesday, October 30, 2013 at 1:21pm by Anonymous*

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