sc3

https://drive.google.com/file/d/1ckpaYWfWuldhoocV8PmOmOU_Lopo2TYE/view?usp=sharing

sc2

sc1

Ex21.

Ex20.

z = 3x^2 + 3y^2 +14
z = x + 2y^3

------พล็อตกราฟไม่ได้------

Ex19.

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

Ex18.

y = x^3 - 2x + 5
y = x^2 - 10
y = 3x^2 + 5

Q1  จุดตัดกราฟ (3.56,43.05)