i can't seem to figure out how to get this integral. the integrla of (x+1)/(x^2+2x+2) the answer is .5ln(x^2+2x+2)+C
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Hello, xslim12! i can't seem to figure out how to get this integral. . . The answer has in it . . . didn't it make you suspicious? Let: Substitute: . . . . . Got it?
Originally Posted by Soroban Hello, xslim12! The answer has in it . . . didn't it make you suspicious? Let: 2x + 2)\,dx\quad\Rightarrow\quad (x+1)dx \:=\:\frac{1}{2}du" alt="u \:=\:x^2 + 2x + 2\quad\Rightarrow\quad du \:=\2x + 2)\,dx\quad\Rightarrow\quad (x+1)dx \:=\:\frac{1}{2}du" /> Substitute: . . . . . Got it? omg your a life saver. Integration by substitution, i completely forgot about that! accidentally said by parts LOL :-p thanks again man
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