Week 1 FAQ-2 qst-6

Smiley Boy

unread,

Nov 10, 2020, 7:50:27 PM11/10/20

to Discussion forum for Mathematics for Data Science I

Week 1 FAQ-2 qst-6 _In there, explanation to the option D isn't more acceptable. Anyone have think this can be possible ???

Where we are working with R (Set of real numbers ), how do we put all R num in the function to get that two distinct values.

--

Thanks.!

Bala :)

Malabika Guha Mustafi

unread,

Nov 10, 2020, 9:05:19 PM11/10/20

to Discussion forum for Mathematics for Data Science I, p.balam...@gmail.com

Would you please specify the exact question?

Week 1 FAQ question no. 2 but qst 6? I could not get it.

Anand Iyer

unread,

Nov 10, 2020, 9:20:11 PM11/10/20

to Discussion forum for Mathematics for Data Science I, Malabika Guha Mustafi, Smiley Boy

OP is talking about this one.

https://drive.google.com/file/d/14bwiYoGT36oc5So8eXuhyIh5tvhdUvvk/edit

Coming to the question, the explanation is right.

Consider y = 0. In this example, y can be 0, in two ways. Either 5x + 4 is 0 or 2x - 3 is 0. In the first case, x = -4/5. In the second, x = 3/2. Thus, for two x-values, y has the same value 0. This isn't possible with injective functions.

Smiley Boy

unread,

Nov 10, 2020, 9:27:24 PM11/10/20

to Anand Iyer, Discussion forum for Mathematics for Data Science I, Malabika Guha Mustafi

Sorry guys .. i misunderstood...

--

Peace ....☮︎

Bala :)

Debajyoti Biswas

unread,

Nov 11, 2020, 1:01:07 AM11/11/20

to Discussion forum for Mathematics for Data Science I, p.balam...@gmail.com, Discussion forum for Mathematics for Data Science I, Malabika Guha Mustafi, anandd...@gmail.com

Thanks, Anand for the answer.

Reply all

Reply to author

Forward