The integral int (xdx)/(2-x^2+sqrt(2-x^2) equals: (A) log|1+sqrt(2+x^2)|+C (B) xlog|1-sqrt(2+x^2)|+C (C) -log|1+sqrt(2-x^2)|+C (D) xlog|1-sqrt(2-x^2 )|+C
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