I haven't found a built-in conjunction function, so you might find helpful my workaround:
For simple domain restrictions, you can use a product of conditions:
link
For complex piecewise functions, you can use this hack:
link
Videos
So, im not sure how to put piecewise functions in, i have things like this
In my case I want to create a function where variables a and b are a part of the conditions. In my attempt (which I understand is wrong) I attempted to represent the variables as a vector so that when the vector is in quadrant I the function is equivalent to g(x) and when the vector is in quadrant III the function is equivalent to h(x). In other words I'm trying to create a function where when both a and b are positive f(x)=g(x) and when both a and b are negative f(x)=h(x). Also, If I hadn't already made it clear the variables can be seperate and do not need to be in vector form, they just need to be supplementary to one output within the piecewise function. Is there a way to write this in desmos?
I want to do list->list+[point] if and only if distance(point, a)<distance(point, b) AND distance(point, a)<distance(point, c)