There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ \frac{-sqrt({h}^{2} + {x}^{2})u}{x}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = \frac{-usqrt(h^{2} + x^{2})}{x}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( \frac{-usqrt(h^{2} + x^{2})}{x}\right)}{dx}\\=&\frac{-u*-sqrt(h^{2} + x^{2})}{x^{2}} - \frac{u(0 + 2x)*\frac{1}{2}}{x(h^{2} + x^{2})^{\frac{1}{2}}}\\=&\frac{usqrt(h^{2} + x^{2})}{x^{2}} - \frac{u}{(h^{2} + x^{2})^{\frac{1}{2}}}\\ \end{split}\end{equation} \]

Your problem has not been solved here? Please take a look at the  hot problems ！