In Problems 10 to 14, differentiate from rst principles. 10. f(x)=7x3 11. f(x)=x2+15x4 12. f(x)=4 13. Determine d dx (4x3) from rst principles. 14. Find

In Problems 10 to 14, differentiate from first principles.

10. f(x)=−7x3 

11. f(x)=x2+15x−4 

12. f(x)=4 

13. Determine d dx (4x3) from first principles.
14. Find
d dx
(3x2+5) from first principles.