Question

Всё на фотооооооо........

Answer 1

$13); ; f(x)frac{6+5x}{2x+1} \\f'(x)=frac{5(2x+1)-2(6+5x)}{(2x+1)^2} = frac{10x+5-12-10x}{(2x+1)^2} =-frac{7}{(2x+1)^2} \\15); ; f(x)= frac{sqrt{x}}{9-x^5} \\f'(x)= frac{frac{1}{2sqrt{x}}cdot (9-x^5)-sqrt{x}cdot (-5x^4)}{(9-x^5)^2}= frac{9-x^5+2xcdot 5x^4}{2sqrt{x}cdot (9-x^5)^2}= frac{9+9x^5}{2sqrt{x}cdot (9-x^5)^2} \\16); ; f(x)=(5x-6)^{17}\\f'(x)=17cdot (5x-6)^{16}cdot 5=85cdot (5x-6)^{16}$

Answer 2

15)

Answer 3

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