Question

1. f(x)=x+2 l n x
f'(1)
2. f(x)=2 x-1 supra x
f'(2)

Answer 1

f(x)=x+2·ln(x)=> f'(x)=1+$\frac{2}{x} = \frac{x+2}{x}$=> f'(1)=3

2). f(x)=$\frac{2x-1}{x}$=> f'(x)=$\frac{1}{ x^{2} }$ => f'(2)=$\frac{1}{4}$