$f'\left(x\right)=1$  

 $f'\left(x\right)=0$  

 $f'\left(x\right)=10x$  

 $f'\left(x\right)=x$  

 $\frac{\partial y}{\partial x}=\frac{1}{x^4}$  

 $\frac{\partial y}{\partial x}=-3x$  

 $\frac{\partial y}{\partial x}=-\frac{3}{x^3}$  

 $\frac{\partial y}{\partial x}=-\frac{3}{x^4}$  

 $f'\left(x\right)=20x^4+\cos x$  

 $f'\left(x\right)=25x^4+\cos x$  

 $f'\left(x\right)=25x^4-\sin x$  

 $f'\left(x\right)=10x^4+\cos x$  

 $f'\left(x\right)=\frac{8}{3x^{\frac{1}{3}}}+\sin x$  

 $f'\left(x\right)=\frac{8}{3x^{\frac{1}{3}}}-\sin x$  

 $f'\left(x\right)=\frac{8}{3}x^{\frac{1}{3}}-\sin x$  

 $f'\left(x\right)=\frac{6}{x^{\frac{1}{3}}}+\sin x$  

 $f'\left(x\right)=100x^9+\cos x-\sin x$  

 $f'\left(x\right)=20x^9+\cos x-\sin x$  

 $f'\left(x\right)=20x^9-\cos x+\sin x$  

 $f'\left(x\right)=100x^9-\cos x+\sin x$  

 $f'\left(x\right)=\frac{3}{16x^{\frac{1}{4}}}+\sin x$  

 $f'\left(x\right)=\frac{3}{16x^{\frac{1}{4}}}+\sin x+1$  

 $f'\left(x\right)=\frac{3x^{\frac{1}{4}}}{16}+\sin x$  

 $f'\left(x\right)=\frac{3}{16x^{\frac{1}{4}}}-\sin x$