Question: Finish quick please: 1. Differentiate the following functions. f (x) = cos3(x4) (a) [3 marks] (b)
![1. Differentiate the following functions. f (x) = cos3(x4) (a) [3 marks]](https://s3.amazonaws.com/si.experts.images/answers/2024/06/66684a6362ad1_81966684a6342893.jpg)
Finish quick please:

1. Differentiate the following functions. f (x) = cos3(x4) (a) [3 marks] (b)
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