{"result":{"text":"B equals fraction numerator mu subscript 0 N I over denominator 2 left parenthesis b minus a right parenthesis end fraction integral from a to b of fraction numerator d r over denominator r end fraction equals fraction numerator mu subscript 0 N I over denominator 2 left parenthesis b minus a right parenthesis end fraction ln open parentheses b over a close parentheses"},"status":"ok"}