# Thinkmath:Sandbox

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עוד פעם

Attend a Think Math! summer workshop: Building number and algebra the Think Math! way.
Implementing Think Math!

## Mathematical typesetting

A fraction: $\frac 1 2$

But these don't work: $\frac a b$

$3 \frac 1 2$

Failed to parse (unknown function\bigl): \int^1_\kappa \left[\bigl(1-w^2\bigr)\bigl(\kappa^2-w^2\bigr)\right]^{-1/2} dw = \frac{4}{\left(1+\sqrt{\kappa}\,\right)^2} K \left(\left(\frac{1-\sqrt{\kappa}}{1+\sqrt{\kappa}}\right)^{\!\!2}\right)

An exponent: f(x) = ax2 + bx + c

1. Perry's Handbook, Sixth Edition, McGraw-Hill Co., 1984.

row 1, cell 1 row 1, cell 2 row 1, cell 3
row 2, cell 1 row 2, cell 2 row 2, cell 3

### Some mathematical typesetting examples

 $\mathit{12345}\,$ $\Rightarrow$ $0(x)\,$ A five digit number, an arrow, and some notations. $\underline{-3\mathit{124}}\,$ $\Rightarrow$ $\times 2\,$ More stuff. $\mathit{9} 2 \mathit{21}\,$ $\bigg\Downarrow$ We need two rows of arrow on one side. $\Downarrow$ But only one row of arrow on the other. ${2}\,$ $\Leftrightarrow$ $2\,$ Final comment.