I'm interested in looking at mappings of functions.
For example, how would I come up with a function $f:x\in[0,\infty)|\longmapsto\ (-\infty, 0]$ where $f(x)=x^2.$ Basically I want to glue every point to the right of this function to the left.
2026-03-28 05:20:55.1774675255
Looking into mappings
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HINT: Construct a function mapping positive elements to their additive inverse. This is impossible with $f(x) = x^2$.