What is this error means? on mac r2012b: "Undefined function 'impulse' for input arguments of type 'double'."

4 次查看(过去 30 天)
for Example i write just:
impulse([1],[1 2 9])
Undefined function 'impulse' for input arguments of type 'double'.
gives this error or:
tf(1,[1 2 9]);
Undefined function 'tf' for input arguments of type 'double'.
every function like this *I Use matlab 2012b on Mac *

回答(2 个)

Thomas
Thomas 2012-11-13
编辑:Thomas 2012-11-13
It probably means you not have the Control System Toolbox. Use the ver command to see if you havethe toolbox
ver
or see the output of the following
which impulse
which tf
  6 个评论
Javid azimi
Javid azimi 2012-11-21
thanks Thomas
if i get the account where and how can i download?
u mean that I can connect form university domain to mathworks site and download with university license?
Thomas
Thomas 2012-11-21
编辑:Thomas 2012-11-21
IF the license the University license includes the Controls Toolbox and your University email id is authorized to be added to the license. I manage a license for a University and we have to add users email ids to be associated with the accounts or get product key to associate licenses to accounts. If we need extra toolboxes we pay for them to be added to our license.

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NN
NN 2012-11-13
编辑:NN 2012-11-13
It seems that your function is not defined.
e.g. try something like this to define a function
impuls= @(x,y) x+y

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