Question

F(x)=3/(5-x) + x^2/5 найти f'(2)

Answer 1

$f'(x) = -frac{3}{(5-x)^2} + frac{2x}{5} \ f'(2) = - frac{3}{9} + frac{4}{5} = frac{36-15}{45} = frac{21}{45} = frac{7}{15}$

Answer 2

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Answer 3

фото///////////////////////////////////////////////////