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Improper integrals, My first time doing improper integrals , could you help me out on the first one please ? https://www.dropbox.com/s/wridon5503p8r3z/Screenshot%202013-11-03%2020.24.16.jpg
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this can be done also by kutur putur method....
after replacing rt x by u take u^2 common then replace 4/x^2 by another variable.....then diff both sides of 4/x2 to replace with dx
hm
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