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# Methods of Integration | IntMath forum

- Re: Direct Integration, i.e., Integration without using 'u' substitution [Solved!]

Right, after we differentiated our solutions, we arrived at the original integrands. Which is...**phinah**23 Sep 2019, 10:16 - Integration by Parts [Solved!]

When using IBP, is the rule to simplify ‘v times du’ FIRST and then integrate...**phinah**11 Dec 2018, 02:54 - Decomposing Fractions [Solved!]

In decomposing the fraction of Chapter 11 Integration example 3 b, we are trying to...**phinah**21 Aug 2018, 04:33 - Partial Fraction [Solved!]

In example 4, the numerator in the next-to-last step is `(1/2)x + 1.` How did you...**phinah**19 Jun 2018, 05:51 - Degrees and Radians [Solved!]

How is the sine of sixty degrees a negative number in radians?**phinah**18 May 2018, 10:17 - Integration Techniques [Solved!]

You state in Section four that all angles are in radians and that the formulas...**phinah**26 Apr 2018, 07:32 - Taking e to both sides [Solved!]

Your Integration Chapter: The Basic Logarithmic Form, example 4. Can you show how you took e...**phinah**22 Apr 2018, 04:18 - integration by trig substitution [Solved!]

Chapter 8:Integration by Trig Sub. Exercise 1: In the third step down the constant...**phinah**10 Apr 2018, 10:44 - Find integral sqrt (x^2 + 1) using trigonometric substitution [Solved!]

Find `int sqrt (x^2 + 1) dx` with limits of integration from 0 to...**phinah**07 Feb 2018, 04:06 - Re: Integral help please [Solved!]

Of course! `int 1/(x^4+1)dx ` `=1/(4sqrt(2)) int(x + sqrt(2))/(x^2+1+xsqrt(2))dx` `+ 1/(4sqrt(2)) int(-x + sqrt(2))/((x^2+1-xsqrt(2)))dx` `=1/(4sqrt(2))[ ln(x^2+1+xsqrt(2)):} `...**Mahamaya**15 Dec 2015, 06:21