En längre mätning av temperaturen när vatten svalnar

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Den utskrivbara versionen stöds inte längre och kanske innehåller renderingsfel. Uppdatera din webbläsares bokmärken och använd standardutskriftsfunktionen istället.

Här finns en fil med värden från en längre mätning.

Dessa värden ligger här i GeoGebra och jag har försökt få till en kurvanpassning med RegressionExp[] men det funkar inte så bra. Fundera på varför exponentialfunktionen passar så dåligt till värdena.

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För bra kurvanpassning bör man addera en konstant term. I detta fall har jag till och med lagt till lite mer än rumstemperaturen. Så här ser en bättre kurvanpassning ut: