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Question: Value from operator in plot title

Question:Value from operator in plot title

Christopher2222 5785
May 23 2013
0

I have a function related to some values and I want to include the value in the title.  So I initially try ...

sine:=(Amp,freq,phase,t)->Amp*sin(2*Pi*freq*t+phase):
plot(sine(1, 2, 0, t), t = 0 .. 1, title = cat(freq, " sine wave cycles"))

but once I use the value in the function it is not remembered, sort of like a subs operation.  A placeholder is the simplest way.

a:=2:
plot(sine(1, a, 0, t), t = 0 .. 1, title = cat(a, " sine wave cycles"))

 

But the operator arrow is like a procedure, so is there not something like a global variable that maple remembers so you don't need that placeholder?
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