Question 1062580
*[illustration zoozer].
<pre><b>
These are graphs of

f(x) = a*sin(bx+c)+d


In the first graph the amplitude "a" is varying,
but the period "{{{2pi/b}}}" is constant.

In the second graph the period "{{{2pi/b}}}" is changing
but the amplitude "a" is constant.

Edwin</pre>