There are 1 questions in this calculation: for each question, the 3 derivative of x is calculated.
    Note that variables are case sensitive.
\[ \begin{equation}\begin{split}[1/1]Find\ the\ third\ derivative\ of\ function\ 7{x}^{4} - 3{x}^{3}\ with\ respect\ to\ x：\\\end{split}\end{equation} \]\[ \begin{equation}\begin{split}\\Solution:&\\ &Primitive\ function\ = 7x^{4} - 3x^{3}\\&\color{blue}{The\ first\ derivative\ function：}\\&\frac{d\left( 7x^{4} - 3x^{3}\right)}{dx}\\=&7*4x^{3} - 3*3x^{2}\\=&28x^{3} - 9x^{2}\\\\ &\color{blue}{The\ second\ derivative\ of\ function:} \\&\frac{d\left( 28x^{3} - 9x^{2}\right)}{dx}\\=&28*3x^{2} - 9*2x\\=&84x^{2} - 18x\\\\ &\color{blue}{The\ third\ derivative\ of\ function:} \\&\frac{d\left( 84x^{2} - 18x\right)}{dx}\\=&84*2x - 18\\=&168x - 18\\ \end{split}\end{equation} \]

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