Corum, on this forum use "\", not "#". Also, the final "/MATH must be completely inclosed in [ ].

"[ math ] \theta [ /math ] (without the spaces) gives

.

To see the LaTex code for any expression in a post, click on that expression.

Dynamo, to rotate y= f(x) through angle

, around the origin, replace x with

and y with

.

To rotate y= f(x) through angle

, about point [tex](x_0, y_0), first translate [tex](x_0, y_0) to the origin by subtracting

from x and

from y, then do the rotation, then translate back.

That is, replace x with

and replace y with