บทความ

Ex20.

Ex19. z=x^3-2y^2+4

Ex18. x^3-2x+5,x^2-10,3x^2+5

Ex17. y=3x**2-5 y=2x-2

Ex16. y=sin(x)+2cos(x)

Ex15. y=x^3+3x^2+5

Ex14. y=x+5

Ex13. log(100)

Ex12. 12!

Ex11. ln(1)

Ex10. e**1