There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ (9.46 - x)(7 - x)(3.42 + x)\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 66.22x - 32.3532x - 9.46x^{2} - 23.94x - 7x^{2} + 3.42x^{2} + x^{3} + 226.4724\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 66.22x - 32.3532x - 9.46x^{2} - 23.94x - 7x^{2} + 3.42x^{2} + x^{3} + 226.4724\right)}{dx}\\=&66.22 - 32.3532 - 9.46*2x - 23.94 - 7*2x + 3.42*2x + 3x^{2} + 0\\=& - 18.92x - 14x + 6.84x + 3x^{2} + 9.9268\\ \end{split}\end{equation} \]

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