ASCIIMathML formulas test

You will find here some formulas written in MathML


`a = b^2 `

` {(S_(11),...,S_(1n)),(vdots,ddots,vdots),(S_(m1),...,S_(mn))] `



`e^x = 1+x+1/(2!)x^2 + 1/(3!)x^3 + cdots `.

`|x|= {(x , if x ge 0 text(,)),(-x , if x <0.):}`


A `3xx3` matrix,
`((1,2,3),(4,5,6),(7,8,9))`,
and a `2xx1` matrix, or vector, `((1),(0))`.

The outer brackets determine the delimiters e.g.
`|(a,b),(c,d)|=ad-bc`.

A general `m xx n` matrix
`((a_(11), cdots , a_(1n)),(vdots, ddots, vdots),(a_(m1), cdots , a_(mn)))`

Using the quadratic formula, the roots of `x^2-6x+4=0` are

`x = (-6 +- sqrt((-6)^2 - 4 (1)(4)))/(2 xx 1)`

`\ \ = (-6 +- sqrt(36 - 16))/2`

`\ \ =(-6 +- sqrt(20))/2`

`\ \ = -0.8 or 2.2 \ \ \ `to 1 decimal place.

`sum_(k=1)^n k = 1+2+ cdots +n=(n(n+1))/2`



`int_0^1 x^2 dx`


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