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by nomel
1 day ago
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Sure. I was speaking to the what, not how. > that doesn’t round at all. It computes with constructive real numbers: every result is exact, and you can scroll any answer for as many correct digits as you want. A CAS is a practical way to achieve this, where everything is stored symbolically, with no rounding, until final calculation. Unlimited precision was through Erable [1]. This was included with/as HP49 CAS, but was an add-on with HP48. Many HP48 are on the iOS app store. The one I tried about a decade ago had the add-on, and I see many still there (but not sure if they have the add-on). The "S" in CAS is "system", so it's a bit open. [1] https://en.wikipedia.org/wiki/Erable |
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