Question
Differentiate the following function with respect to (x):
$\text{x}^4-2\sin\text{x}+\cos\text{x}$
$\text{x}^4-2\sin\text{x}+\cos\text{x}$
$\frac{\text{d}}{\text{dx}}(\text{x}^4-2\sin\text{x}+3\cos\text{x})$
$=\frac{\text{d}(\text{x})^4}{\text{dx}}-2\frac{\text{d}}{\text{dx}}(\sin\text{x})+\frac{\text{d}}{\text{dx}}(\cos\text{x})$
$=4\text{x}^3-2\cos\text{x}-3\sin\text{x}$
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$\frac12,\frac13,\frac29,\frac{4}{27}\dots$
Either 9 nor 11 as the sum of the numbers on the faces.