Where the Compositions Have Opposite Signs
Difficulty: Hard · Topics: Algebra, Functions, Composition of Functions
Kompozitsiyalar qarama-qarshi ishorali bo‘lganda
f(x)=x+2 and g(x)=x^2-7.
How many integers x satisfy (f° g)(x)·(g° f)(x)<0?
f(x)=x+2 va g(x)=x^2-7.
Nechta butun x (f° g)(x)·(g° f)(x)<0 ni qanoatlantiradi?