(1) If f(x)=x10\displaystyle {f{{\left({x}\right)}}}={x}^{{10}}, then f′(x)=\displaystyle {f}'{\left({x}\right)}=  

(2) If g(x)=−4x2\displaystyle {g{{\left({x}\right)}}}=-{4}{x}^{{2}}, then g′(x)=\displaystyle {g}'{\left({x}\right)}=  

(3) If h(x)=1x4\displaystyle {h}{\left({x}\right)}=\frac{{1}}{{x}^{{4}}}, then h′(x)=\displaystyle {h}'{\left({x}\right)}=  

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