Game Development Reference
In-Depth Information
Figure 10.14
Position the absolute value bars before you position the Value field.
Figure 10.15
The absolute value of a cube generates positive y values.
Even and Odd Exponential Values
Plotting the values for the cube of
x
introduces a notion that proves essential to
working with the graphs of exponents. As Figure 10.16 illustrates, in situations
where the exponent for the number is even, you see graphs that open upward.
Such graphs are symmetrical with respect to the
y
axis.
In contrast, in situations where the exponent of the variable is odd, then only one
arm of the graph extends upward. As Figure 10.17 shows, the graph that results is
symmetrical with respect to the origin of the Cartesian coordinate plane.
You can use Visual Formula to implement two equations at a time and, in this
way, compare the actions of even and odd exponents and negative base values.
