5. (2 балла) Найдите производную функции:

3) $$f(x) = \text{ln}x - 3x - x^6$$. $$f'(x) = \frac{1}{x} - 3 - 6x^5$$
4) $$f(x) = e^x \text{sin } x$$. $$f'(x) = (e^x)' \text{sin } x + e^x (\text{sin } x)' = e^x \text{sin } x + e^x \text{cos } x = e^x(\text{sin } x + \text{cos } x)$$