Solving a 'Cambridge' University entrance exam

[@twallgren]

If you end up trying different values anyway, why not doing it from the start? It will take a few seconds to find the solution x=5 without even using a pen.

[@itsnotfin]

exactly, figured this out from the thumbnail and didnt expect such a lengthy explanation to end up using the same method lol

[@AsadInternationalAcademy]

thanks

[@AsadInternationalAcademy]

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[@AsadInternationalAcademy]

easy

[@AsadInternationalAcademy]

Watch 110+ most important olympiad questions with solutions by just clicking on the link below kzbin.info/aero/PLybCHBiqtqWP-TrcsG21MXXxlknROi514 Don't forget to share this link with your classmates so that they also have a benefit of it. Please, like and subscribe this channel including pressing bell icon to get the notification of new video!

[@WarhorseFranklin]

For factorials can you always assume that you’re working with integers?

[@npcwithsidequest]

Yes, I think so, they are always integers if what you initially assumed is also one.

[@DrBotnus]

Yes, the factorial is only for the domain of natural numbers. However, we have extended the factorial to the reals, which is what we call the gamma function. The gamma function is unfortunately complex, so using the recursive factorial operation is better where it is possible.

[@AsadInternationalAcademy]

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[@AsadInternationalAcademy]

yes

[@AsadInternationalAcademy]

Watch 110+ most important olympiad questions with solutions by just clicking on the link below kzbin.info/aero/PLybCHBiqtqWP-TrcsG21MXXxlknROi514 Don't forget to share this link with your classmates so that they also have a benefit of it. Please, like and subscribe this channel including pressing bell icon to get the notification of new video!

[@nikolayplatnov5148]

Factorial is a very fast growing function and the equation (n-2)! = n+1 can be reasonably expected that n is close to 1. n=3. As I supposed.

[@AsadInternationalAcademy]

Good

[@AsadInternationalAcademy]

Watch 110+ most important olympiad questions with solutions by just clicking on the link below kzbin.info/aero/PLybCHBiqtqWP-TrcsG21MXXxlknROi514 Don't forget to share this link with your classmates so that they also have a benefit of it. Please, like and subscribe this channel including pressing bell icon to get the notification of new video!

[@nikolayplatnov5148]

@@AsadInternationalAcademy thanks for your work