Mathematics, 06.08.2021 14:00, naz731

Cho hai hàm f : R −→ R, g : R −→ R lần lượt xác định bởi f(x) = ax + b và g(x) = cx + d, hãy xác định a, b, c, d để f ◦ g = g ◦ f và
f(f(x)) = f(x) + 1, ∀x.

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Cho hai hàm f : R −→ R, g : R −→ R lần lượt xác định bởi f(x) = ax + b và g(x) = cx + d, hãy xác đị...