Question

dada a função f(x) = 2+x/3-x determine a derivada de f(x) no ponto x = 1

Answer 1

f(x)= 2+(x/3-x)
f'x=$\frac{1*(3-x)-(-1*x)}{(3-x)^2} = \frac{3}{(3-x)^2} = \frac{3}{(3-1)^2}= \frac{3}{4}$