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Cho hàm số y=f(x) có đạo hàm trên (0;+∞) thỏa mãn 2xf'(x)+f(x)=2x ∀x∈(0;+∞)
2 months ago
189
Cho hàm số y=f(x) có đạo hàm trên (0;+∞) thỏa mãn 2xf'(x)+f(x)=2x
∀x∈(0;+∞).f(1)=1.Giá trị biểu thức f(4) là:
A.25/6 B.25/3 C.17/6 D.17/3
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