{"result":{"text":"begin mathsize 14px style integral from negative 2 lambda to fraction numerator negative 4 over denominator 3 end fraction mu of fraction numerator x plus 1 over denominator x squared plus 1 end fraction d x equals integral from negative 2 lambda to 2 lambda of fraction numerator x plus 1 over denominator x squared plus 1 end fraction d x end style"},"status":"ok"}