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Best answer by VipulT

@CamilleLaflamme

 

You can use symbolic evaluation 

2 replies

VipulT16-PearlAnswer
16-Pearl
June 15, 2020

@CamilleLaflamme

 

You can use symbolic evaluation 

1-Visitor
June 15, 2020

Works juste fine thank's a lot !! 

25-Diamond I
June 15, 2020

In Prime we have numerical (=) and symbolic (->) evaluation. Numerical evaluation requires that all used variables have to be defined with numerical values so it can yield a numeric result.

Your definition of C3 uses the undefined variables E and I and thats the reason for the error message.