Mathematics: Post your doubts here!

[haha101]

https://www.xtremepapers.com/community/attachments/p1-question-png.24987/


please help me on thse

common someone

 

[Rutzaba]

naw .. he means

like with

k^2 – 4k < 0
k(k-4)<0
we get two numbers .. k=4 and k=0 .. how does one know which sign to put.. greater then or less then and with which..

k-4<0 .. k<4 ? and k<0 ?

lemme give u an example with graphs? itl take a few mins yeah?

 

[Manobilly]

I have only done 2012 :\

really?????

 

[syed1995]

lemme give u an example with graphs? itl take a few mins yeah?

SURE!

 

[syed1995]

really?????

Yep.. And all the questions which I did while helping members here.

 

[Manobilly]

okay one thing we can do to make this thread better is to post questions here only... and not the tension... cux tension is contagious for others... lowers the general level of morale! you ppl gonna ace it YEA?!

InshAllah

 

[haha101]

Try to give your best ,1st attempt the 1's you can easily solve .U will save time that way. don't panic .

thanks for the advice

 

[Manobilly]

Yep.. And all the questions which I did while helping members here.

Oh well Good Luck

 

[Manobilly]

Question7 O/N12 paper 11 ,part ii

 

[syed1995]

I just hope the examiner doesn't pull his hair after seeing my handwriting.... and deduct marks :\

 

[Manobilly]

I just hope the examiner doesn't pull his hair after seeing my handwriting.... and deduct marks :\

Hahahah same here.

 

[syed1995]

Question7 O/N12 paper 11 ,part ii

Forgot the question ?

 

[PANDA-]

Rutzaba
That would be great Thank you.

 

[haha101]

naw .. he means

like with

k^2 – 4k < 0
k(k-4)<0
we get two numbers .. k=4 and k=0 .. how does one know which sign to put.. greater then or less then and with which..

k-4<0 .. k<4 ? and k<0 ?

swhen you simultaneously solve and get one eq of the curve and line . look at the coefficient of the x^2 term if its positive then its a mimimum curve

 

[syed1995]

swhen you simultaneously solve and get one eq of the curve and line . look at the coefficient of the x^2 term if its positive then its a mimimum curve

still don't get it...

 

[Manobilly]

Forgot the question ?

Mentioned it Q7ii

 

[PANDA-]

still don't get it...

Me neither. This is seeming to be like one of the many things I'll skip tomorrow.

 

[Manobilly]

lemme give u an example with graphs? itl take a few mins yeah?

can U explain the method of graphs ,I never got it

 

[daredevil]

naw .. he means

like with

k^2 – 4k < 0
k(k-4)<0
we get two numbers .. k=4 and k=0 .. how does one know which sign to put.. greater then or less then and with which..

k-4<0 .. k<4 ? and k<0 ?

lookie here

umm this is how we did it so u can do it with a graph or a number line its totally up to u.... as the equaiton is <0 so we need the -ve values. now follow me from here: -

_____________0______________4_______ <-- this is my number line (no make fun -.-
--------------------------> [more than 0 is this part]
--------------> [more than 4 is this part]
(- and - make +) (+ and - = -) (+ and + make +)

so as we need -ve the area on the number line which is -ve is where we have -ve and +ve bcz + and - make -
so our range will b 0<k<4

PANDA-

 

[daredevil]

i hope u guys get it now bcz had a hard time making that number line -_-
syed1995 and PANDA- but if u don't just ask again and i'll c wat i can do