Find the derivative of the functions from first principle (x – 1) (x – 2)

Asked by Pragya Singh | 1 year ago |  92

##### Solution :-

$$f'(x)=\lim\limits_{h \to 0}\dfrac{f(x+h)-f(x)}{h}$$

$$\lim\limits_{h \to 0}\dfrac{(hx+hx+h^2-2h-h)}{h}$$

$$\lim\limits_{h \to 0}\dfrac{2hx+h^2-3h}{h}$$

$$\lim\limits_{h \to 0}(2x+h-3)$$

= 2x-3

Answered by Abhisek | 1 year ago

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