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- ComoLv 72 weeks ago
:-

Let u = 5x³ - 4x

du/dx = 15x² - 4

y = ln u

dy/du = 1/u

dy/dx = (15x² - 4) / u

dy/dx = (15x² - 4 ) / (5x³ - 4x)

- 2 weeks ago
When you differentiate the natural log you just get f’(x)/f(x). Take the derivative of whatever’s in your natural log function and put it over what’s in the natural log function.

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its not homework im new to differentiating log functions. so ya