Introduction
(1) Section (Ratio) Formula
(2) Distance between 2 points
AB
(3) An equation in
x, y, z
represents a surfaces
(a)
Ax
+
By
+
Cz
+
D
= 0
(b)
y
=
x
(c)
y
= 0
xz
plane
x
= 0
yz
plane
z
= 0
xy
plane
(d)
x
2
+
y
2
= 1
a cylinder
(e)
(
x
-
x
o
)
2
+ (
y
-
y
o
)
2
+ (
z
-
z
o
)
2
= 1
a sphere
(4) Equation of straight line