AS/A2
Pure 4
Pure 6
P5
Topic 2:
Hyperbolic functions
Graphs and properties: cosh ax
Change the value of
a
and describe the geometric symmetry of the curve.
Summary
cosh ax is an example of an
even
function, ie., f(-x) = f(x)
The curve has reflection symmetry about the y-axis.
cosh ax
³
1 for all values of a or x
Based on free Java applets from
JavaMath