en.wikipedia.org/wiki/Integration_by_substitution

In calculus, **integration by substitution**, also known as u-substitution, is a method
for finding integrals. Using the fundamental theorem of calculus often requires ...

www.khanacademy.org/math/ap-calculus-ab/ab-antiderivatives-ftc/ab-u-substitution/v/u-substitution

So for the same reason you are able to eliminate the dx when **integrating** a
function that does not require u-**substitution**, that's also why Sal can eliminate the
du ...

www.mathsisfun.com/calculus/integration-by-substitution.html

"**Integration by Substitution**" (also called "u-substitution") is a method to find an
integral, but only when it can be set up in a special way. The first and most vital ...

tutorial.math.lamar.edu/Classes/CalcI/SubstitutionRuleIndefinite.aspx

What we've done in the work above is called the **Substitution** Rule. ... Since we
can only **integrate** roots if there is just an x under the root a good first guess for ...

www.mathcentre.ac.uk/resources/workbooks/mathcentre/web-integrationbysub-tony.pdf

There are occasions when it is possible to perform an apparently difficult piece of
**integration** by first making a **substitution**. This has the effect of changing the ...

www.math.hmc.edu/calculus/tutorials/substitution

Computing Integrals by **Substitution** ... Example. Let's compute 2x(x2−1)4dx by
making the **substitution** .... Substitute back to, Change the limits of **integration**:.

www.math.ucdavis.edu/~kouba/CalcTwoDIRECTORY/usubdirectory/USubstitution.html

The following problems involve the method of u-**substitution**. It is a method for ...
However, it may not be obvious to some how to **integrate**. $ \displaystyle{ \int ...

revisionmaths.com/advanced-level-maths-revision/pure-maths/calculus/integration-substitution

**Integration by substitution**, it is possible to transform a difficult integral to an
easier integral by using a substitution. For example, suppose we are integrating a
...