o level add maths november 2012

[ritesh isuri]

talk for U yeah..., i have not understood a single thing in this chapter!!! my teacher has not explained it well!!!

even ur tuition teacher???

 

[shain612]

even ur tuition teacher???

i DO not take tuitions for add maths!!!

 

[ritesh isuri]

i DO not take tuitions for add maths!!!

thats why!!! u should have taken!!!

 

[shain612]

thats why!!! u should have taken!!!

thats why what?

 

[ritesh isuri]

thats why what?

thats why you have not understood. but however even i have not understood in tuition but rather in school

 

[shain612]

thats why you have not understood. but however even i have not understood in tuition but rather in school

ohhh ok

 

[ritesh isuri]

have you understood the chapter function?

 

[shain612]

no not really!!1 but i can manage a bit

 

[ritesh isuri]

cool can u help me?

 

[shain612]

yeah why not? tell me what problem do u have?

 

[ritesh isuri]

can u tell me what is the range for the function: f(x)=lnx?

 

[shain612]

well the range of a function means its values for y and the domain means that of x.

 

[shain612]

the domain for this function is (x>0) this is because ln of a negative number does not exists!!

 

[shain612]

and for any values of x(x>0)the values of y can be anything between -infinity to infinity, and this can be represented by an empty box

 

[ritesh isuri]

ohh thk u so much!!! i did not know thw y and x thing but now yes thx to u!!

 

[shain612]

can u help me a bit on permutations a combinations?

 

[ritesh isuri]

yeah sure

 

[shain612]

when do we know if it is permutation or combination??/

 

[ritesh isuri]

well whenever it says number of arrangements its permutation and if it says number of ways or number of selections its combination

 

[shain612]

oohhh thk u so much