a) \(f(x)=\frac{3}{x^2}-\sqrt{7}*x^3+7x+7\)
\(f´(x)=\frac{0*x^2-3*2x}{(x^2)^2}-\sqrt{7}*3*x^2+7\)
\(f´(x)=\frac{-6x}{x^4}-\sqrt{7}*3*x^2+7\)
\(f´(x)=-\frac{6}{x^3}-\sqrt{7}*3*x^2+7\)
b) \(f(x)=2*\sqrt{x}+\frac{7}{x}-2\)
\(f(x)=2*x^{\frac{1}{2}}+\frac{7}{x}-2\)
\(f´(x)=2*\frac{1}{2}*x^{\frac{1}{2}-1}+\frac{0*x-7*1}{x^2}\)
\(f´(x)=x^{-\frac{1}{2}}-\frac{7}{x^2}\)
\(f´(x)=\frac{1}{\sqrt{x}}-\frac{7}{x^2}\)
\(f´(x)=\frac{\sqrt{x}}{x}-\frac{7}{x^2}\)