is it possible to store formulas in a calculator, i have a sharp el-531w
Most often, Google is your friend.
On a serious note though. You should NEVER store formaule in a calculator (or have them written somewhere) for that matter. You won't learn them and you will, with the lack of better words, fail.
You can't store formulas in a scientific calculator, you'll need a graphing calculator like a Ti-83+ for this.
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