Question

Определённый интеграл

Answer 1

$Huge int frac{mathrm{d} x }{xsqrt{4-ln x}}=left [ u=4-5ln x, mathrm{d}u=-frac{5}{x}mathrm{d} xright]\ -frac{1}{5}intfrac{mathrm{d} u}{sqrt{u}}=-frac{2}{5}sqrt{u}+C=-frac{2}{5}sqrt{4-ln x}+C$