Matlab ilaplace command questions

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SUMMARY

The discussion centers on the use of the ilaplace command in MATLAB, specifically the issue of receiving an unexpected output involving the Dirac delta function. The user reports that executing the command ilaplace(1/(s-1)) yields 1 - dirac(t) instead of the expected exp(t). The confusion arises from a potential syntax error, where the user may have inadvertently typed ilaplace(1/s-1). Correct usage requires proper parentheses to achieve the desired result.

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bassplayer142
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I am using the ilaplace command from MATLAB and it keeps spitting out the dirac delta function. I typed the exact command in the MATLAB help section and it still gives me this. for example I type in this...

ilaplace(1/(s-1))

and I get this...

1 - dirac(t)

below is a copy of MATLAB help file that has this exact command with the result I'm after.

Examples:
syms s t w x y
ilaplace(1/(s-1)) returns exp(t)

Any help would be great. I'm thinking it is some format command or something beforehand.
 
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I think you must have mistakenly typed it as >> ilaplace(1/s-1)
Thats why you got 1 - dirac(t).
 
matematikawan said:
I think you must have mistakenly typed it as >> ilaplace(1/s-1)
Thats why you got 1 - dirac(t).

I'm not quite sure what you mean? Sorry for the much delayed response.

EDIT: AHH I see what your saying now with the parentases!
 

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