Use the four-step process to find f'(x) and then find f'(1), f'(2), and f'(3). f(x)=2x+x-1 f'(x)=...

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Use the four-step process to find f'(x) and then find f'(1), f'(2), and f'(3). f(x)=2x+x-1 f'(x)= f'(1)=(Type an integer or a simplified fraction.) f'(2)= (Type an integer or a simplified fraction.) f'(3)= (Type an integer or a simplified fraction.) Use the four-step process to find f'(x) and then find f'(1), f'(2), and f'(3). f(x)=2x+x-1 f'(x)= f'(1)=(Type an integer or a simplified fraction.) f'(2)= (Type an integer or a simplified fraction.) f'(3)= (Type an integer or a simplified fraction.)