scientific calculator

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bug13

Joined Feb 13, 2012
2,002
I just realize that my $30/US$25 Casio fx-991ES calculator can do integration, differentiation, complex number calculation, and a lot of other stuff, and the battery last for ages, what a good deal!!:eek:
 

KMoffett

Joined Dec 19, 2007
2,918
I keep finding scientific calculators like TI-30-II series for $3.99 at thrift stores. Usually just need batteries...that jacks up the cost. ;)

Ken
 
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