You can use function notation as an easy, efficient way of using equations without re-writing them. For example, you can evaluate a function at a certain point:
You can use the notation f(x,y), for example, to define a function with more than one variable:
Defining a function once allows you to use this function within other functions.
Or, you can combine multiple functions together to create a separate function.
Functions should be able to accept points as arguments. It would be very helpful.
Are there any plans to eventually implement recursive functions?
Your f(x,y) never uses the y variable...it is essentially a one-variable function. I was looking for how to graph f(x,y)=x+y+xy?
Is there a way to have a function return a function?
Bonjour,
Very quick. Can we define function names with more than one letters like :
TempEngine (t) = ....
Derivative (t) =
Numerator (x) =....
Denom(x) = ....
Ratio(x) = Numerator(x)/Denom(x)
The help file should at least explain what is possible and what is not.We (the users) would save lot of time. Best regards, Philippe
Actually, Desmos can define many-to-many functions, but I can't find it documented anywhere on the official site here. For example, you can define a determinant function like this:
d(U,V)=U[1]V[2] - U[2]V[1]
then:
d([1,2], [3,4]) will be 4 - 6 = -2
You can even define a cross product function in 3D space like this:
c(U,V) = [ d([U[2], U[3]], [V[2], V[3]]), d([U[3], U[1]], [V[3], V[1]]), d([U[1], U[2]], [V[1], V[2]]) ]
I know it's complicated, but it works like a charm!
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