I made a function in script "length(x,y) = sqrt((x^2)+(y^2))".
When I typed in "plot(length(x,2))".
I received this error "Error: Unexpected operator ) (char 2)"

Also "plot(sin(x*0.2))" makes a sine wave with some spiky lines that aren't supposed to be there.
Image:
http://postimg.org/image/7jdl8mcv3/

this is needed for more algebra

In script:
this.functions=[
"plot1(x) = plot(x,0:1,0.002)"
];

In calculator:
"plot1(fract(x*2))"

Error:
": Error. Undefined symbol plot1"

"plot(cos(t*tau),sin(t*tau),0:1,0.01)" makes a circle.
Like in Desmos: http://postimg.org/image/49tw1bytr/

Executing the same function within a function makes a "not defined" error message

That basically simplifies fractions, radicals, etc.

Please keep the green background from changing to black. It's hard to see what you're typing!!! I'm using chrome.

simplifying fractions

Im not sure if it is missing or I just cant find it but I cant find the function that switched fromdeg to rad and vise versa

fix

log(8,2) returns 2.9999999...
log(32,2) returns 4.999999...
log(27,3) returns 2.999999...
log(125,5) returns 3.00000...
etc.

While technically not incorrect, this makes copy/pasting tedious, etc.

being able add or subtract from totals/results

you guys need to update the site the answer is 1,0804 and that make Pi=3140