Which substituation would I need to use for this intergral; [y.du/(y^2 + (x - u)^2)]
Nov 12, 2006 #1 Lee 56 0 Which substituation would I need to use for this intergral; [y.du/(y^2 + (x - u)^2)]
Nov 12, 2006 #2 Galileo Science Advisor Homework Helper 1,995 6 The integrand looks like [tex]1/(1+x^2)[/tex] which has antiderivative arctan(x). Try to make substitutions to match that expression.
The integrand looks like [tex]1/(1+x^2)[/tex] which has antiderivative arctan(x). Try to make substitutions to match that expression.
Nov 13, 2006 #3 Lee 56 0 Got it, take the y out the intergral, make b=x-u then db=-du sub in and use the arctan intergral, getting -tan^-1((x-u)/y)
Got it, take the y out the intergral, make b=x-u then db=-du sub in and use the arctan intergral, getting -tan^-1((x-u)/y)