calculate like this way
-(9/14)*log(2)/log(9/14)-(5/14)*log(2)/log(5/14)=
or use CASIO CALCULATOR fx-991ES
More information about formatting options
asnwe
calculate like this way
-(9/14)*log(2)/log(9/14)-(5/14)*log(2)/log(5/14)=
or use CASIO CALCULATOR
fx-991ES