...<kbd>\\right</kbd>)',
            class: 'small',
            latex: `ax^2+bx+c = a \\left( x - \\frac{-b + \\sqrt {b^2-4ac}}{2a} \\right) \\left( x - \\frac{-b - \\sqrt {b^2-4ac}}{2a} \\right)`,
          },
          {
            title: 'L‚ÄôH√¥pital‚Äôs Rule',
            pic: 'l-hopital.gif',
            comment:
              'The limit of an indeterminate form 0/0 is the limit of the derivatives of the numerator and the denominator.',
            latex: `\\lim_{x\\to 0}{\\frac{e^x-1}{2x