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concalc package

Error using parenthesis

Asked by achuth

Why do I get an error while using parenthesis in concalc?
example:
$ concalc exp(5/0.21)
bash: syntax error near unexpected token `('

Even the example given in the manpage doesnt seem to work
concalc sin(pi/2)
bash: syntax error near unexpected token `('

What/Where is the problem here?

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Ubuntu concalc Edit question
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Solved by:
Manfred Hampl
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Best Manfred Hampl (m-hampl) said : 		#1

Try

concalc "exp(5/0.21)"

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achuth (achuthpnr) said : 		#2

Thanks Manfred Hampl, that solved my question.

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actionparsnip (andrew-woodhead666) said : 		#3

bc is also decent (and in a default install)