There are 1 questions in this calculation: for each question, the 1 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ first\ derivative\ of\ function\ {(7 - {x}^{4})}^{2}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = x^{8} - 14x^{4} + 49\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( x^{8} - 14x^{4} + 49\right)}{dx}\\=&8x^{7} - 14*4x^{3} + 0\\=&8x^{7} - 56x^{3}\\ \end{split}\end{equation} \]

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