All illustrations and text
©Dan Welchman Productions (our publisher).
Not to be used or copied without written permission from the publisher.

Click on the pictures below to find out about some applications of raising a number
to a power. Maybe you already know a few uses for the square
and the cube of a number, but what about x to the power 4 or
even x to the power 5?
The square of a number, x^{2}
is used extensively for working out the areas of things. But you also need it for
some rather more exciting calculations, as I found out the other day on the roof of the club.


Similarly, there's a lot more you can do with the cube
of a number besides working out volumes.
Click on the picture (right) to find out what the motorbike has got to do with
x^{3}.


x^{4} (which you say out loud as
"x to the power 4") is a kind of shorthand for
x * x * x * x.
You could be forgiven for thinking that this is only useful as a plaything for
idle mathematicians. But x^{4} has some perfectly serious
uses. Click on the picture for an example.


Even more esoteric than x^{4} is the mysterious
x^{5} (which is pronounced
"x to the power five" or even just "x to the five").
And yet, even this high powered monstrosity has some down to earth
applications. There's even one in the club's humble
basement.



