## Tip invalidated by [fireflame241's comment](https://codegolf.stackexchange.com/questions/230100/tips-for-code-golfing-in-desmos#comment528123_230101).

First tip to start it off.

When doing comparisons in your code, most of the times, it is better to try not to use brackets `{ }` in your code, because they always require a `\left` and a `\right` to go with them, which increases byte count unnecessarily. Instead, we can utilize the `sign` function. 

Consider a naive implementation that returns `0` if `a=b`, and returns `1` otherwise:
<br>(22 bytes)
```
\left\{a=b:0,1\right\}
```
Instead of doing this, we can save 9 bytes by doing a little math instead:
<br>(11 bytes)
```
sign(a-b)^2
```
This works because `sign(x)` returns `-1` if `x` is negative, `0` if `x=0`, and `1` otherwise. `a-b` is `0` only when `a=b`, so `sign(a-b)` would be `0` only when `a=b`. If `a` does not equal `b`, it returns either `-1` or `1`. The `^2` is just to convert the `-1` to a `1`. 

Even if we wanted to return `1` if `a=b` and `0` otherwise, we can still save 9 bytes by doing `1-sign(a-b)^2` instead of `\left\{a=b:1,0\right\}`.