Помогите решить СРОЧНО!

Question

Помогите решить СРОЧНО!

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Answer 1

F `(x)=((4x-7)/(x^2+4))`=((4x-7)`(x^2+4)-(4x-7)(x^2+4))/(x^2+4)^2=
=4(x^2+4)-2x(4x-7)/(x^2+4)^2=(4x^2+16-8x^2+14)/(x^2+4)^2=
=(-4x^2+30)/(x^2+4)^2
f `(x0)=-4*0^2+30/(0^2+4)^2=30/16=1,875