		           TECHNIQUES OF INTEGRATION
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	List of Techniques

	1) integration of powers of trig functions
	2) trig substitution
	3) completing the square
	4) integration by parts

The following results are used widely in this area.

           2       2
	sin x + cos x = 1

           2           2
	tan x + 1 = sec x
	
           2
	sin x = (1 - cos 2x)/2

           2
	cos x = (1 + cos 2x)/2


	sin (A ± B) = sin A cos B ± sin B cos A


	cos (A + B) = cos A cos B - sin A sin B


	cos (A - B) = cos A cos B + sin A sin B


          2               2
	ax  + bx + c = a(x  + bx/a) + c

                          2           2   2         2   
                     = a(x  + bx/a + b /4a ) + c - b /4a

                                  2        2   
                     = a(x + b/2a)  + c - b /4a


        	⌠             ⌠
        	│ u dv = uv - │ v du
                ⌡             ⌡

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