Question

Tìm tập xác định: y = (3 - x) * sqrt(x - 1) + (2x + 2)/(x ^ 2 - 4x + 3)

Answer 1

ĐKXĐ: \(\left\{{}\begin{matrix}x-1>=0\\x^2-4x+3< >0\end{matrix}\right.\)

=>\(\left\{{}\begin{matrix}x>=1\\\left(x-1\right)\left(x-3\right)< >0\end{matrix}\right.\)

=>\(\left\{{}\begin{matrix}x>1\\x< >3\end{matrix}\right.\)