jnu

[ritu]

1.suppose we know that IaI<3.WHICH OF THE FOLLOWING CONDITIONS  is enough to imply that IbI<5???
a.Ia+bI<8
b.2<Ia-bI<8
c. Ia-bI<=2
d. 3<Ia-bI<=5

i know it has been discussed earlier...bt m still confused btwn option c and d ...pls tell me how to do it.


2.with a  positive externality....
a.there is underconsumption in free mkt
b.there is overconsumption in free mkt
c.the govt may tax to decrease production
d.society could be made better off if less is produced


as far as i know there is undersupply of good having +ve externality....so shud the option be  b...underconsumption???????



3.let A be a set {f(x):0<x<1}.what does it mean if we say y is not an element of A?
a.f(y) isnt an element of a
b.f(y) isnt btwn 0 & 1
c.y is not between f(0)  &  f(1)
d.none of above



4.pls somebody tell me anser to ""QUESTION 79""....

5. QUESTIONS 75-78
CONFIRM IF THESE ANSWERS ARE RIGHT:
75.   OPTION C
76.   OPTION A
77.   OPTION B
78.   OPTION B




6.the graphs of vtwo equations y=ax^2+bx+c and y=Ax^2+Bx+C such that "a" & "A" have diff signs and the quantities b^2-4ac and B^2-4AC are  both negative
a.intersect at two points
b.intersect at one point
c.do not intersect
d.none of above


pls reply soon!!!

[a.m]

Hi ritu

1. c

2. b

3. c

5. 75, 76,77
could you please tell me the approach to 78 ?

6. c

[a.m]

sorry. i forgot to write : 75,75,77 are correct.

[faizy]

hi ritu..........

1. a

2. a

[kratika]

hey guys....can u plz explain how to do the first question!!!

[ritu]

hi am ....they do not intersect becoz these equations have imaginary roots and thus we cant draw their graphs in real?????right????


for q 78...u just look for maximum output at which p= mc...if there is no output level at which p=mc u simply choose that output level at which p>mc...ie, the last level of output at which p>mc ....

[a.m]

@ Ritu - YES ! thats the logic.

and also. answer 2. is under consumption. had specified the wrong code ! :)

[a.m]

Ritu - Yes ! Thats right. and thank you for your help !