If I want to oblige a function to be ≥ 0, does that mean a>0 and Δ<0?

[dawn sphinx]

Delta?

[dawn sphinx]

Ah. A quadratic function

Yeah you're right!

delta = 0 for function to be 0 tho. So maybe say delta≤0

[silver glen]

let's call the quadratic function f(x)
for f(x) >= 0 for all x, the following criterias must satisfy:

1. a > 0
2. D <= 0