HP 50g can't solve equation

[gor1060]

(04-30-2023 02:40 PM)Alchemisst Wrote:  It is sad to find that correct answer is not available directly in such a high end calc like HP 50g.HP Prime is reliable for solving any equation under the sun as all of its outcomes are known.

Anybody who'd use this calc will use this
solvevx()->MSLV()->Root() and he'll directly get incorrect answer 3.You'd manually need to check all methods to find solution.However fsolve() function on HP Prime acts like a search engine it will try each way and also show it to you.like bijection with change of variable,its solvers are advanced.It does everything for you.Also you get general solution and principal solution both on one click.I have no hate for a device but is there a way out???

(04-30-2023 01:06 PM)Alchemisst Wrote:  Prime gives correct solution. 2.7746 as shown by Wolfram Alpha

:-) HP 50g with EXPAND, HP Prime and Wolfram Alpha are given wrong answer 2.774621...

Check it by substitution.