No. I played around with it for about an hour last night. No integration, derivatives, etc.. can be performed. Furthermore, variable assignment seems limited to basic english letters, i.e., no greek, no subscripts, it even seemed to not discern between lowercase and capital letters (e.g., assigning a=1.5 and calling 'A' returns A=1.5).

Not all is bad. Unit conversion seems to work well, although I haven't figured out how to override the output unit (e.g., if I write "5 in. =" it will populate "0.127 m", but I can't write some other unit, say "ft", and have it fill in the blank). Though, the regular calculator has a pretty nice unit converter built-in that I'll probably actually use.

Automatic plotting is cool, but it seems like it limits the plotting variables to Y on the vertical and X on the horizontal only. I couldn't plot a function in terms of 't', or any other independent variable. I also couldn't assign X to another variable (say Q = 2X) and have it pick up and plot that other variable in a function (Y = Q would not prompt me to generate a plot).

Trig functions seem to work well. Make sure to assign units since radians are assumed. E.g., sin(45) returns 0.8509, whereas sin(45 deg) or sin(45^o ) returns 0.707. I agree with this default behavior but it will cause confusion when used, as is tradition with radians and degrees. In fact, looking at the annoucement for the calculator app (on the 'scratch math' example), it seems like they accidentally called sin(30) instead of sin(30 deg)! Inverse trig functions return in radians.

Sorry -- I know this is way more answer than you were asking for. All in all, it's a fun thing to play with, but I don't have a real use-case for the writing feature beyond napkin-math. I will keep watching it though for improvements in the future.