Continued fraction

How to write the plus/minus signs aligned with the bottom of the fraction. I can write the rest of the part of equation (1.1) and (1.2). but can cot write the plus/minus sign at the bottom.

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  • no no. I have written this code: [a_0+\frac{b_1}{a_1}_+\frac{b_2}{a_2}]So I am not getting desirable space in plus sign between two fraction. – Sushree Oct 29 '14 at 4:42

Here are two options:

enter image description here


Option 1:
  1 - \begin{array}{@{}*{8}{c@{}}}
    1 &       & 1 &       & 1 &       & 1 \\ \cline{1-1}\cline{3-3}\cline{5-5}\cline{7-7}
    1 & {}+{} & 1 & {}-{} & 1 & {}+{} & 1 & {}- \cdots
  \end{array} =

Option 2:
  1 - \frac{1}{1} \subplus \frac{1}{1} \subminus \frac{1}{1} \subplus \frac{1}{1} \subminus \subcdots =


Option 1 sets the fraction as an array, using \cline to simulate the fraction lines. Option 2 uses amsmath to set a fraction with 0pt horizontal rule. Additional macros have been created to set these using \subplus, \subminus and \subcdots.

  • ...I prefer Option 2. – Werner Oct 29 '14 at 8:23

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