Curves:
cubic
Choose values for a, b and x and observe the values of
y = ax
3
+b
a =
b =
start from x =
x
x
3
ax
3
+b
Use this table to solve:
2x
3
+1 = 55
x=
3x
3
- 2 = 22
x=
4x
3
+8 = 4
x=
-x
3
+ 1 = 9
x=
x
3
- 60 = 940
x=
What you should understand
Equations like those above that you had to solve are called
cubic equations
. There is often more than one answer for each one.
