{"result":{"text":"open square brackets r with rightwards arrow on top a with rightwards arrow on top b with rightwards arrow on top close square brackets equals 5 over 4 comma r with rightwards arrow on top. left parenthesis 3 a with rightwards arrow on top plus 2 b with rightwards arrow on top right parenthesis equals 0 space space a n d space space integral from negative 2 r with rightwards arrow on top. a with rightwards arrow on top to fraction numerator negative 4 over denominator 3 end fraction r with rightwards arrow on top. b with rightwards arrow on top of fraction numerator x plus 1 over denominator x squared plus 1 end fraction d x equals pi over 2."},"status":"ok"}