My Math Forum Evaluate integral

 Calculus Calculus Math Forum

 May 17th, 2009, 02:48 PM #1 Newbie   Joined: May 2009 Posts: 13 Thanks: 0 Evaluate integral evaluate integrate 2x ( tan ^-1 (4x) ) how do u make integral signs? and how do i make -1 superscript? wat i tried doing here was integration by parts uv - integral vdu that led me in circles i got x^2 tan ^-1 (4x ) - integral of (x^2)/(1+16x^2) that going in the right direction?
 May 17th, 2009, 03:02 PM #2 Guest   Joined: Posts: n/a Thanks: Re: Evaluate integral Yes, that looks like a good start. To integrate the last one, $\int\frac{x^{2}}{16x^{2}+1}dx$ Rewrite it as $\frac{1}{16}-\frac{1}{16(16x^{2}+1)}$
May 17th, 2009, 03:13 PM   #3
Senior Member

Joined: Jul 2008

Posts: 895
Thanks: 0

Re: Evaluate integral

Quote:
 Originally Posted by symopp how do u make integral signs? and how do i make -1 superscript?
I use MathType. When the 30 day trial is up, it reverts to the Lite version ...still great. Or you can try this:

http://mmlsoft.com/

 May 17th, 2009, 03:18 PM #4 Guest   Joined: Posts: n/a Thanks: Re: Evaluate integral I reckon I am hard-headed. I type out the code. I tried the MathType, but when the trial ran out I just resorted to doing it by hand.
May 18th, 2009, 05:21 AM   #5
Senior Member

Joined: Mar 2007

Posts: 428
Thanks: 0

Re: Evaluate integral

Quote:
 Originally Posted by galactus I reckon I am hard-headed. I type out the code. I tried the MathType, but when the trial ran out I just resorted to doing it by hand.
[color=#FF0000]EDIT:[/color] I had not realised I had logged in a long time back under "David", and then again, later, under "Dave". Same person if no-one can use the same names.

I used to type in DOS line commands and spend a day setting dip switches in a dot-matrix printer [shudder.] I LOVE GUI and Multitasking! Why not give the suggestions a try? The Lite version of MathType is used in Word and WordPerfect. I use it since I can then use it with the OpenOffice free suite for example, and also send stuff here [I have an extra step to get rid of the surrounding bracket-slash and replace with the Latex option given here, but that takes only a second.]

As is:

$\int\limits_{ - {\textstyle{\pi \over 2}}}^{{\textstyle{\pi \over 2}}} {\sin ^2 \theta d\theta }$

Changed:

$\int\limits_{ - {\textstyle{\pi \over 2}}}^{{\textstyle{\pi \over 2}}} {\sin ^2 \theta d\theta }$

From Hermitech Formulator [freeware]:

[attachment=0:3nlkxicl]Integral.jpg[/attachment:3nlkxicl]

The latter is a JPG image, but can be exported as XML and more. Hermitech is not as friendly as MathType though, and so not as useful.

 May 18th, 2009, 08:53 AM #6 Guest   Joined: Posts: n/a Thanks: Re: Evaluate integral Thanks. That's right. I forgot Word supports LaTex. I will have to give it a whirl and get used to doing it that way instead of typing of the code.
 May 18th, 2009, 04:11 PM #7 Senior Member   Joined: Jul 2008 Posts: 895 Thanks: 0 Re: Evaluate integral Just one more quick note: Everything has a learning curve. Some get frustrated at first having to click some icon or drop-down list of icons for each and every step. Like typing, it takes time to become efficient [typing I never learned and never will], but it does become efficient. Also, if using MathType, check preferences/translators to decide which to copy for use in a word processor and which to post here for example.

 Tags evaluate, integral

 Thread Tools Display Modes Linear Mode

 Similar Threads Thread Thread Starter Forum Replies Last Post pjlloyd100 Calculus 1 January 27th, 2013 12:48 PM mortified_penguin Calculus 5 December 29th, 2012 06:59 PM zaidalyafey Calculus 4 August 17th, 2012 10:23 AM lovetolearn Calculus 3 April 14th, 2012 03:47 PM sivela Calculus 0 January 18th, 2011 04:04 PM

 Contact - Home - Forums - Cryptocurrency Forum - Top