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  1. Asked: March 25, 2023In: Algebra ( වීජ ගණිතය )

    Test question

    meta-hub-user6 Begginer ( Level 6 )
    Added an answer on March 25, 2023 at 2:49 am

    this is a test answer.

    this is a test answer.

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  2. Asked: February 24, 2023In: Arithmetic ( අංක ගණිතය )

    Irrationality of the constant e of exponential function.

    Gaya Nayomi Level 1 ( Top Rated ) Senior Lecturer-University of Sri Jayewardenepura
    Added an answer on March 16, 2023 at 8:23 pm

    What you should be teaching your students is not that "the sum of rational numbers is rational", but, "the sum of two rational numbers is rational" which you can extend, using the principle of mathematical induction, to "the sum of a *finite* number of rational numbers is rational". It should be cleRead more

    What you should be teaching your students is not that “the sum of rational numbers is rational”, but, “the sum of two rational numbers is rational” which you can extend, using the principle of mathematical induction, to “the sum of a *finite* number of rational numbers is rational”.

    It should be clear that this claim cannot be extended to *infinite* sums blindly. In fact, by definition, an infinite sum is actually the limit of a finite sum (partial sums).

    “e” is a counterexample for this. The infinite sum of rational numbers need not necessarily be a rational number. 

    ~MetaHub Panel for Teachers’ Forum

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  3. Asked: March 12, 2023In: Mensuration ( මිණිතය )

    Searching for Easy Tip

    Gaya Nayomi Level 1 ( Top Rated ) Senior Lecturer-University of Sri Jayewardenepura
    Added an answer on March 13, 2023 at 11:29 am

    There is a webinar on the number Pi tomorrow (14th) at 6 pm where these topics will be touched. We invite you to join that. The link is on the home page on MetaHub. https://learn.zoom.us/j/63881167775?pwd=YU5WeFFLcFJOM3M0NDhNUFB3Wk54QT09 We'll wait to see what other teachers have to say on this (whaRead more

    There is a webinar on the number Pi tomorrow (14th) at 6 pm where these topics will be touched. We invite you to join that. The link is on the home page on MetaHub.

    https://learn.zoom.us/j/63881167775?pwd=YU5WeFFLcFJOM3M0NDhNUFB3Wk54QT09

    We’ll wait to see what other teachers have to say on this (what techniques they use) and our reply will be posted in a few days time.

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  4. Asked: March 9, 2023In: Algebra ( වීජ ගණිතය )

    Functions

    Janaka
    Added an answer on March 9, 2023 at 11:16 pm

    Codomain Y is a set stated by the definition of a function such that all outputs of the function need to be within it , in other words it is a set of all possible outputs. Range R is the set of all outputs of a function and which can be determined by the relation and domain of the function. ThereforRead more

    Codomain Y is a set stated by the definition of a function such that all outputs of the function need to be within it , in other words it is a set of all possible outputs. Range R is the set of all outputs of a function and which can be determined by the relation and domain of the function. Therefore by definition R should be a subset of Y.  If R = Y function maps it’s domain onto codomain , if R ⊂ Y function maps it’s domain into codomain.

    To get a better insight of the issue we can consider probability function because it has practical importance and we can clearly see the difference of the two sets  . Here the domain is Event space and codomain is the set [0,1] but range is only particular values within the set [0,1]. In the case of tossing a coin once  range is the set {0,1/2 , 1} .

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  5. Asked: March 7, 2023In: Arithmetic ( අංක ගණිතය )

    Real number system

    Janaka Rodrigo Level 3 English medium advanced level mathematics teacher at St Benedicts College Colombo 13
    Added an answer on March 7, 2023 at 8:05 am
    Forum

    Here you have the related informations, your suggestions are greatly appreciated.

    Here you have the related informations, your suggestions are greatly appreciated.

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  6. Asked: March 7, 2023In: Algebra ( වීජ ගණිතය )

    Illustrating powers of sums by geometrical means

    Janaka Rodrigo Level 3 English medium advanced level mathematics teacher at St Benedicts College Colombo 13
    Added an answer on March 7, 2023 at 7:20 am
    Forum

    Here you have related informations, your suggestions are greatly appreciated.

    Here you have related informations, your suggestions are greatly appreciated.

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  7. Asked: March 5, 2023In: Arithmetic ( අංක ගණිතය )

    Divisors and factors

    Janaka Rodrigo Level 3 English medium advanced level mathematics teacher at St Benedicts College Colombo 13
    Added an answer on March 5, 2023 at 3:13 pm
    Forum

    Here you have the related informations, your suggestions are greatly appreciated.

    Here you have the related informations, your suggestions are greatly appreciated.

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  8. Asked: March 5, 2023In: Arithmetic ( අංක ගණිතය )

    Times table

    Janaka Rodrigo Level 3 English medium advanced level mathematics teacher at St Benedicts College Colombo 13
    Added an answer on March 5, 2023 at 3:03 pm
    Forum

    Here you have related informations , your suggestions are greatly appreciated.

    Here you have related informations , your suggestions are greatly appreciated.

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  9. Asked: March 4, 2023In: Geometry ( ජ්‍යාමිතිය )

    Paradoxes

    Janaka Rodrigo Level 3 English medium advanced level mathematics teacher at St Benedicts College Colombo 13
    Added an answer on March 4, 2023 at 2:46 pm
    Forum

    Here you have the related informations, open for your suggestions.

    Here you have the related informations, open for your suggestions.

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  10. Asked: March 4, 2023In: Geometry ( ජ්‍යාමිතිය )

    Conjectures

    Janaka Rodrigo Level 3 English medium advanced level mathematics teacher at St Benedicts College Colombo 13
    Added an answer on March 4, 2023 at 2:38 pm
    Forum

    Here you have related informations, open for your suggestions.

    Here you have related informations, open for your suggestions.

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    meta-hub-user6 added an answer this is a test answer. March 25, 2023 at 2:49 am
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    Gaya Nayomi added an answer ~MetaHub Panel for Teachers' Forum          … March 23, 2023 at 4:12 pm
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    Janaka added an answer Really sorry for not pointing it out, that should be… March 18, 2023 at 11:17 pm

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