Add an AC button

the area of a land in Telangana region in Andhra Pradesh State, India usually measures in Acres & Guntas. Guntas are fraction of acres.

used latest google chrome

If u enter 2%*20000 the result will be E... the same result for any similar equation.

As title stated. The reason is that when I launch the app (which I refers to Google Chrome extension) after went offline, it can't get to work since it requires the internet connection. But of course when I launch the app before went offline, it works fine.

option to pick decimal mark between comma and dot

I would recommend you design a feature into the calculator where users could make it behave like one of the classic Hewlett Packard calculators. I find the reverse polish notation to be much faster for carrying out computations.

Your trig functions are wack . . .

let git it back

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

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

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

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

Error:
": Error. Undefined symbol plot1"