Casio fx 991 ES PLUS feature

  • #1
1,007
76
How can we solve equation with 4 variables in this calculator?
For 3 it solves in equation mode. Or the 4x4 matrix is not there?

Can the calculator show graphs?
 

Answers and Replies

  • #2
CalcNerd
Education Advisor
Gold Member
397
154
4x4 matrix is NOT there. Nor are there any graphing features, the dot matrix display allows for viewing equations.
 
Last edited:

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