Doubt

[Pranjal Sarkar]

Respected Sir/Madam

In week 2 Practice Assignment 2, question 5,

I could not understand why the second and sixth options are incorrect.

I have gone through the solution pdf and solution video as well but still have doubt.

My logic for choosing second option:

We can write R as R={(a,b)|(a,b)∈X×Y,b=a+2}, where X is the set of all values on the x − axis, and Y is the set of all values on the y − axis  

--> Reason: The pattern follows that the output of the respective inputs are 2 greater than the input.

My logic for choosing sixth option:

If R is a function then it is a bijective function on X×Y , where X is the set of all values on the x − axis, and Y is the set of all values on the y − axis.  

--> Reason: Since the domain of the function is the whole of the x - axis, then the value of the function also covers the whole of the y - axis.

Kindly inspect where I am going wrong and provide the solutions for the same.

Waiting for an early reply.

Thank you

Pranjal Sarkar

[Pranjal Sarkar]

Respected Sir/Madam

Please answer this question.

Thanks

Pranjal Sarkar

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[Mathematics 1 Support 2]

Hi,

Please consider that the question is only for 5 points not for all the points on the axes.
If it is for whole the points on the axis then it should be a line.

Best wishes,

Rahul

[Kshitij Patel]

Can anybody explain me point no. 7 duplicate elements with example

[KISHAR NATH]

{1,2,3,4,4} Cardinality of this set is 4 the second 4 will be ignored

On Sat, Nov 7, 2020, 9:23 PM Kshitij Patel <help5...@gmail.com> wrote:

Can anybody explain me point no. 7 duplicate elements with example

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