CGL 2012 Tier 2 Preparations and Results

@rahulshaitan Hi..thanks for sharing it..it was helpful

@mr.seven
@mr.seven said:

can any one tell me how to solve this type of problems .....

1)the perimeter of the an isosceles triangle is 2p units then the area of te same triangle is?2)the least value of 4cosecc^2(x)+psin^2(x)? are there any special formulae to solve this kind of probs if so please tell me.3)area of trapezium formed by x axis ,y axis and the lines 3x+4y=12 and 6x+8y=60 is?

thanks in advance.....

i just take sides 1, 1,rt2 so 2p=2+rt2 area =1/2=2p/4+2rt2

2nd one A.P>=G.P
SO ANS IS RT8P check question again i think may be some type error in place of p

3rd 3.just find x,y-intercepts then use area of quadrilateral 1/2{(x1-x3)(y2-y4)-(x2-x4)(y1-y3)}
@JS-M said:
yr it took me too much time to find H.C.F of 1517 & 907.... ur view
bhai isme pehle ek number ke factors nikal lo pehle fir dusre ko devide kar ke dekho. i guess ye calculation kum time legi
@JS-M


@JS-M said:
yr it took me too much time to find H.C.F of 1517 & 907.... ur view


use divison method u will get with in 30 seconds

@JS-M said:
yr it took me too much time to find H.C.F of 1517 & 907.... ur view
bhai isme pehle ek number ke factors nikal lo pehle fir dusre ko devide kar ke dekho. i guess ye calculation kum time legi
@nellorereddy said:
@JS-M
use divison method u will get with in 30 seconds
ohh thanx.....that thnk i almost forgot.....yes it took around 17.34 second preciously....

@nellorereddy sorry its my typo mistake its not p its 9 the question is least value of

4 cosec^2 (x)+9 sin^2(x) ?

options are 14 10 11 12

@rahulshaitan said:
bhai isme pehle ek number ke factors nikal lo pehle fir dusre ko devide kar ke dekho. i guess ye calculation kum time legi
yeah thanx....... yr but division method z realy time saver...try it out
@JS-M said:
ohh thanx.....that thnk i almost forgot.....yes it took around 17.34 second preciously....
bhai kya stopwatch lekar solve kiya hai

@mr.seven 4cosec^2x+9sin^2(x)+12-12

then [2cosec x-3sin x]^2 +12

min value of 2 cosec X-3sin x=0

then the mim value is 12

@mr.seven said:

@nellorereddy sorry its my typo mistake its not p its 9 the question is least value of

4 cosec^2 (x)+9 sin^2(x) ?

options are 14 10 11 12

12 ........yr perfect sqaure bna lo usko zero ke qual rakh dena....u will get it
@JS-M said:
yeah thanx....... yr but division method z realy time saver...try it out
bhai try kiya acha hai but pata nahi kyu but ab to aadat si hai mujhko aise he karne ki :-P
A sum of money at compound interest doubles itself in 15 yrs. It will become eight times of itself in ??
@JS-M said:
12 ........yr perfect sqaure bna lo usko zero ke qual rakh dena....u will get it
bhai same question ki maximum value calculate karni ho to kaise karenge????
@JS-M

45yearss??
@JS-M said: A sum of money at compound interest doubles itself in 15 yrs. It will become eight times of itself in ??
45 years
@rahulshaitan said:
bhai same question ki maximum value calculate karni ho to kaise karenge????
yr max value will be infinite ..becoz U-shaped graph z formd by thz equation.
My take...
@JS-M 45
@JS-M said:
yr max value will be infinite .............becoz U-shaped graph z formed by this equations....
My take....
yaar kisi ke pass max min wale questions ka koi queation bank ho to please attach karo yaar
(x+1/x)^10 in this expansion the middle term is??