How do I make a percent sign? How do I make a Delta sign?
Sorry, the TI83/83Plus/84/84PLUS/ Silver edition do not have a key or a command to calculate a %, or enter a % symbol. They do not have Greek alphabet letters either.
However in the Finance application there is a TVM variable called tvm_I% but you cannot isolate the % symbol. Similarly, in the TABLE setup you have DeltaTbl variable that fixes the step in a table, but you cannot isolate the Delta symbol.
These are the native capabilities of this family of calculators, and that does not mean that there does not exist a third-party program that can do what you want. You can look on the ticalc.org website.
Just wondering, why would you need these particular symbols when they mean nothing to the calculator?
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