Tuesday

September 30, 2014

September 30, 2014

Number of results: 8,728

**Maths - Integration by parts**

Integral x^2 sin(x) dx
*November 7, 2012 by Anonymous*

**Maths -Integration by parts**

Intergral square root of x sin(x) dx
*November 7, 2012 by Anonymous*

**Maths - Integration by parts**

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

**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
*May 18, 2011 by Emma*

**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 ...
*February 9, 2009 by Anonymous*

**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. ...
*May 23, 2007 by marsha*

**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!
*August 27, 2009 by tiff*

**math**

integration by parts - Integration of x^2 ln(x^3+2)
*February 23, 2011 by zooey*

**Maths-Integration by Partial Fraction**

Use integration by partial fractions to find Integral (3x^2-x+2)/(x-1)(x^2+1) dx
*December 12, 2012 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...
*February 17, 2007 by nicholas*

**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.
*November 2, 2010 by AY*

**Maths - Integration by Parts**

Question 1 ç e^2x Cos(4x) dx Question 2) ç ãx sin(x) dx Question 3) ç x^2 sin(x) dx
*November 7, 2012 by Anonymous*

**Integration by parts**

integrate (e^x-x)^2 dx
*July 13, 2011 by Steff*

**Calculus**

xe^x using integration by parts
*May 21, 2014 by Laurie*

**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 ...
*October 13, 2008 by Cindy*

**calculus**

The antiderivative of arctan(4t)dt by integration of parts.
*February 28, 2011 by Kate*

**Calculus B**

The antiderivative of ln(2x+1) using integration by parts.
*February 28, 2011 by Brandon*

**calculus **

reverse the order of integration integration 1-e integration 0-lnx dy dx
*January 12, 2012 by ali*

**Calculus 2**

integral of xarctanxdx using integration by parts.
*September 26, 2012 by Heather*

**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?
*December 4, 2012 by kchik*

**calculus**

Use integration by parts to find ∫ 2x e-x dx.
*March 11, 2013 by mikey2*

**CALCULUS**

USE INTEGRATION BY PARTS TO FIND EACH INTEGRAL ƪxe^2x dx
*July 6, 2011 by renee*

**Cal**

USE INTEGRATION BY PARTS TO FIND EACH INTEGRAL ƪxe^2x dx
*July 6, 2011 by renee*

**Calculus**

Use integration by parts to evaluate the integral xsqrt(2x+6)dx.
*September 26, 2013 by Taylor*

**CALCULUS**

USE INTEGRATION BY PARTS TO FIND EACH INTEGRAL ƪx^5 Lnx dx
*July 6, 2011 by renee*

**calculus**

USE INTEGRATION BY PARTS TO FIND EACH INTEGRAL ƪãx lnx dx
*July 6, 2011 by renee*

**brief calc**

evaluate the integral using integration by parts 7xe^-x
*November 19, 2013 by kyle*

**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)......
*May 7, 2007 by Maria*

**Calculus**

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

**Calculus**

Use either substitution or integration by parts to evaluate the integral: ∫(x+2)/(x²+2) dx Thank you!!
*October 18, 2011 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?
*December 14, 2011 by Anonymous*

**Maths**

what is the integration of dx/Cos^4(x)
*September 7, 2011 by Deepak*

**maths**

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

**cal**

USE INTEGRATION BY PARTS TO FIND EACH INTEGRAL ƪsquare rootx lnx dx
*July 6, 2011 by renee*

**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).
*April 7, 2014 by chelsea *

**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 ...
*February 12, 2007 by Nitin*

**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 ...
*August 13, 2010 by arron hamilton*

**Calculus**

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

**Math Integration**

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

**calculus**

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

**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
*December 19, 2009 by Andrea*

**Maths- Integration by partial fractions**

Integral (3x^2-x+2)/(x-1)(x^2+1) dx
*December 12, 2012 by Anonymous*

**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
*January 21, 2008 by sarah*

**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
*March 3, 2009 by Anonymous*

**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 ...
*March 8, 2014 by ricky*

**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
*November 23, 2011 by Jane*

**maths**

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

**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): ...
*September 11, 2013 by Ad*

**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.
*February 27, 2009 by Jake*

**Maths - Integration**

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

**Calculus**

I need help solving the integral of t * e^-3t dt I know that I have to solve using integration by parts and so I've let u=t to rid of dt and dv=e^-3t which I believe would yield -(1/3) * e^-3t as v. Am I doing this correctly? Thanks. I appreciate the help. (:
*February 7, 2013 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)] dx = ln(2x+1)x- s (2x/2x+1) dx = ln(2x+1)x- s [(2x+1-1)/(2x+1)] ... i'm confused about why there is a minus 1 after the integral
*February 17, 2007 by nicholas*

**math**

Use integration by parts to verify |(from -pi to +pi)cosmxcosnxdx = pi when m=n and |(from -pi to +pi)cosmxcosnxdx = 0 when m and n are not equal.
*March 2, 2011 by chris*

**Calculus II**

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

**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!
*March 28, 2011 by Brandon *

**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.
*November 4, 2007 by Michael*

**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?
*October 8, 2008 by allison*

**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!!
*October 18, 2011 by Erica*

**Stats: Joint Density Function**

Let the joint density function of X and Ybe given by: f(x)={kxy^2 for 0<x<y<1 (0 otherwise what is the value of k? Can someone please help me with this? The formula I used was: ))kxy^2 dx dy (where )) is double integration both from 0 to 1). I worked it out (I think) ...
*October 18, 2006 by Stephanie*

**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?
*January 20, 2009 by tee*

**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!
*November 11, 2010 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!
*November 16, 2010 by Adam*

**Calc ..basic integration**

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

**math(easy integration)**

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

**AP Calc B/C**

the integration of (e^x)/(1-E^2x)^3/2 with respect to x We are currently doing integration by tables, but I can't find the formula that I should use!
*September 29, 2014 by Anon*

**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
*November 15, 2009 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
*November 15, 2009 by Amelia*

**Maths (Integration)**

Integrate(1+x/x^3)dx Don't know how to go bout this, if the numerator was a whole number it would ve been easier for me, Pls help me out.
*May 21, 2014 by Francis *

**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
*February 24, 2011 by daniel*

**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.
*February 15, 2012 by Elaine*

**Calculus Problem**

I need to find the integral of e^(2x)sin(3x) I used integration by parts and I let u=e^2x and dv=sin(3x) My final answer was (-3/8)(e^(2x))(cos(3x)) - (1/8)(e^(2x))(sin(3x)) but it's wrong. Please help!!
*February 15, 2013 by Confused*

**Calc**

evaluate the indefinite integral: x^13(cos(x^7))dx I've tried using integration by parts but I haven't ssem to be getting the right answer. I've used u=x^13 and dv=cos(x^7) and vice versa... much help is appreciated
*February 26, 2009 by marcus*

**Calculus**

"Evaluate the following indefinite integral using integration by parts: *integral sign* tan^-1(x) dx" I let u = tan^-1(x) and dv = dx. Is that right?
*May 27, 2010 by Stuck*

**anti derivative**

please help me find anti derivative of -sinx * cos^2x am i using integration by parts?
*November 19, 2008 by mary*

**Calculus II**

Integrate using integration by parts (integral) (5-x) e^3x u = 5-x du = -dx dv = e^3x v = 3e^3x I wonder if this is right so far. = uv - (integral) v du = (5-x)(3e^3x) - (integral) (-3e^3x) =(5-x)(3e^3x) + (integral) (3e^3x) = (5-x)(3e^3x) + 9e^3x + C
*December 30, 2012 by Katie*

**MATHS-PARABOLA**

using integration find the area of the region enclosed between the circle x^2+y^2=16 and the parabola y^2 = 6x
*March 2, 2013 by anchal*

**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.
*October 30, 2013 by Anonymous*

**Calc**

First make an appropriate substitution and then use integration by parts to evaluate the indefinite integrals: ∫ sinx cos³x e^(1-sin²x) dx I was going to substitute u= 1 - sin²x, but then i got du = ½ sinxcosx - ½ xdx, so im stuck. Thank you so much!!
*October 18, 2011 by Erica*

**integrate**

how do i integrate 2u du /u-2+2u^2 so i used subsitution rule? or can i used integration by parts and how? thanks in adnvace
*October 8, 2008 by allison*

**Integration**

ç e^ãx / ãx dx Your symbols are not legible. Please retype using normal keyboard characters Integration of e^radicalx / radicalx dx
*November 30, 2006 by Ash*

**AP Calculus BC**

Hi! Thank you very much for your help--- I'm not sure what the answer to this is; how do I solve? Find antiderivative of (1/(x^2))[sec(1/x)][tan(1/x)]dx I did integration by parts and got to (1/(x^2))[sec(1/x)] + 2*[antiderivative of (1/(x^3))(sec(1/x))dx]
*November 23, 2010 by APpreciative student*

**calculus**

The figure shows the region bounded by the x-axis and the graph of . Use Formulas (42) and (43)-which are derived by integration by parts-to find (a) the area of this region; (b) the volume obtained by revolving this region around the y-axis.
*May 29, 2010 by rene*

**Differential Equations!**

I'm struggling solving this separable differential equations: (du/dv) = ((uv+u)/(uv+v)) I multiplied both sides by dv to get on the left side just du and cancel out dv, but after that don't know where to go. I've tried integration by parts but it doesn't look right! Any help ...
*January 13, 2013 by Massiel*

**calculus**

integration by parts: 1. e^(sqrt(3x+9)) 2. sin(lr) are the answers: 1. 2e^(sqrt(3x+9))(sqrt(3x+9)-1) + C 2. -r cos(lnr) + sin(lr) + C
*May 27, 2007 by cory*

**math**

integration by parts: 1. e^(sqrt(3x+9)) 2. sin(lr) are the answers: 1. 2e^(sqrt(3x+9))(sqrt(3x+9)-1) + C 2. -r cos(lnr) + sin(lr) + C
*May 28, 2007 by cory*

**maths**

integrate by parts çx (lnx)^2 dx
*December 29, 2012 by lucy*

**math**

I'm trying to find the convolution f*g where f(t)=g(t)=sin(t). I set up the integral and proceed to do integration by parts twice, but it keeps working out to 0=0 or sin(t)=sin(t). How am I supposed to approach it? integral (sin(u)sin(t-u)) du from 0 to t.
*December 3, 2009 by chuck*

**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. I tried this problem two different ways and got two different answers 1.63 and 3.89. which one is correct? Please.
*November 27, 2011 by Jane*

**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
*November 21, 2012 by Nono*

**Integral calculus**

Please can anyone help with the following problems - thanks. 1) Integrate X^4 e^x dx 2) Integrate Cos^5(x) dx 3) Integrate Cos^n(x) dx 4) Integrate e^(ax)Sinbx dx 5) Integrate 5xCos3x dx The standard way to solve most of these integrals is using partial integration. So, look ...
*April 13, 2007 by Febby*

**calculus**

how do you solve the integral of 1/[(square root of x)(lnx)] from 2 to infinity? i did the p- integral theorem with 1/square root of x and got it to be a divergent integral. however i was told this was the wrong way and that i should do it by integration by parts. but i can't ...
*August 25, 2009 by kathryn*

**human service**

This is my ask I have to answer. explore the existing integration of mediation and advocacy within a human services agency on a national or international level. Where would I find the answer to this. I belive I am not understanding the meaning of integration.
*September 12, 2011 by Patiance*

**Calc 2**

a. Integral (x^2)/(sqrt(1+(x^2))) Would I separate these two into 2 separate integrals? Like: Integral of x^2 and the other integral of 1/sqrt(1+(x^2)) b. Integral (x^7)/(ln(x^4))dx Do I use integration by parts for this? I put u= lnx du = 1/x dv = x^7 v = (x^8)/8 It doesn't ...
*May 3, 2014 by Bae*

**maths**

How to divide equally a 6cm line into 7 equall parts?
*October 16, 2012 by nanbala*

**Maths**

divide 27 into two parts such that their product is 176
*February 16, 2014 by Mazaa*

**math**

maths (integ) voltage v=25sin50πt is applied on a circuit. using integration, find mean and RMS over range t=0 to 10ms . i got it to 25/2πt^2 cos(2π/9)+c but im not sure that im going the righ way.
*April 21, 2014 by not a lemon*

**possible functions**

How to find all possible functions of f with a given derivative. 1. f'(x) = 2 2. f'(x) = sinx Integrate each function. Remember that there can be an arbitrarcontant C added to each integral. 1. f(x) = x + C 2. f(x) = -cos x + C We haven't learned integration yet. Is there any ...
*October 29, 2006 by Jen*

**Calculus**

I'm having trouble reversing the order of integration of ∫∫dxdy from a=0 to b=2(3)^(1/2) for x and c=y^(2/6) to d=(16-y^2)^(1/2) for y. I graphed the region of integration and that still doesn't really help me. i got approximately 7.9 for the ∫∫dxdy ...
*March 21, 2012 by Brandon*

**calculus-integration!**

should i use substitution?? if yes how should should i use it? plz i need some directions? k plz someone?...so far i used trig. substitution. i got a=8, so i used x=asin(è)so according to this substitution i got x=8sin(è) and dx=8cos(è) dè...then i used used the plug them in ...
*May 6, 2007 by Maria*

**Math/Calculus**

How would I integrate the following by parts: Integral of: (x^2)(sin (ax))dx, where a is any constant. Just like you did x^2 exp(x) below. Also partial integration is not the easiest way to do this integral. You can also use this method. Evaluate first: integral of sin(ax)dx...
*May 28, 2007 by COFFEE*

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