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First of all, I use a CSS page with common underline borders because I use this a lot to portray fractions:

.BorderBottomLine {

border-bottom: 1px solid black;

}

I do make use of tables with invisible borders. I show them with and without the borders so you can see how I did it. These tables must NOT have a width and height set.

x

and the <sub> for subscript

a

I set in my CSS page that all <sub> tags have a font which is 50% size:

sub {

font-size: 50%;

}

√(x + 3)

but there is a way of doing it. It may not quite work on some browsers. Just set the contents in a <span> tag with a top border:

√2+5x

but it doesn't look quite so nice with indices:

√2+5x

0.5 = | 1 |

2 |

0.5 = | 1 |

2 |

Here is another one without the joined up borders:

2 20 |
= | 1 10 |

2 20 |
= | 1 10 |

d | x | 2 |

dx |

d | x | 2 |

dx |

font-size: 75%;

vertical-align: bottom;

∫ | b | sin x dx |

a |

∫ | b | sin x dx |

a |

font-size: 200%;

vertical-align: middle;

and the upper limit is:

vertical-align: top;

text-align: center;

font-size: 75%;

and the lower limit is the same except the vertical alignment is at the bottom.

Without any additional markup, you can just use the symbol ∫:

∫ cos x dx = sin x + C

For this, I just used a two-cell table and put the second cell with a font size of 50%

[2x] | 10 2 |

[2x] | 10 2 |

lim | 2x +Δx |

Δx → 0 |

lim | 2x +Δx |

Δx → 0 |

5

∑ 1+x

x=1

Instead, use three rows and align the limits top and bottom, with all the contents in the first column centrally aligned:

5 | |

∑ | 1 + x |

x =1 |

5 | |

∑ | 1 + x |

x =1 |

( | x_{1}y _{1}z _{1} |
x_{2}y _{2}z _{2} |
x_{3}y _{3}z _{3} |
... ... ... |
) |

( | x_{1}y _{1}z _{1} |
x_{2}y _{2}z _{2} |
x_{3}y _{3}z _{3} |
... ... ... |
) |

( | a b |
sin x b |
) |

The way I do it is to copy and paste them in to my web editor, and it converts them automatically e.g.

π = π

I use free web-page editors Kompozer although this is becoming more out of date. You could also use Bluegriffon which supports HTML 5. With these, you can manually insert symbols.

Have you found an error or do you want to add more
information to these pages? You can contact me at the bottom of the home page. |