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Catalogs Discussion Forums -> Mechanics -> for all those who have mastered constraint motion..try this.. -> Go to message
This Post 2 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]
17 replies   

well just a bit tedious method but still for those you fell diffilculty in relative motion


 

Catalogs Discussion Forums -> Algebra -> x3-[x]=3.solve for x .[ ] represents greatest integer function. -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
5 replies   

not a perfect method .but just a try.


we know,


x={x}+[x]


putiing [x] from above as x-{x}, we get the given eqn as,


{x}=3+x-x3


we know 0<={x} <1


so  0<= 3+x-x3<1


by obsevation we see that x must be lying between (1,2)


so [x]=1


so x= 

Catalogs Discussion Forums -> Mechanics -> SHM -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
1 replies   

is anything mentioned about the ropes? as light or inextensible?


mass of man=?


coz i dont get any logic then of defining the condition


l12+l22=a2+b2 

Catalogs Discussion Forums -> Algebra -> summation -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
1 replies   

plzzz help..altleat give some hint...


 

Catalogs Discussion Forums -> Algebra -> summation -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
1 replies   

find summation of


f(x)=1/(rootx)


x goes from 1 to 100 

Catalogs Discussion Forums -> Algebra -> prove:(1/sinA)+(1/sinB)+(1/sinC)>=2rt3 , if A,B,C are angles of triangle -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
8 replies   

thank u very much hsbhatt sir.

Catalogs Discussion Forums -> Algebra -> prove:(1/sinA)+(1/sinB)+(1/sinC)>=2rt3 , if A,B,C are angles of triangle -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
8 replies   

the one who answers gets 10 rates.


common someone answer? TRIGONOMETRY isnt that pakao!


common newtons, eulid and arybhattas ,help me out.. 

Catalogs Discussion Forums -> Algebra -> prove:(1/sinA)+(1/sinB)+(1/sinC)>=2rt3 , if A,B,C are angles of triangle -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
8 replies   

some more answers? 

Catalogs Discussion Forums -> Algebra -> prove:(1/sinA)+(1/sinB)+(1/sinC)>=2rt3 , if A,B,C are angles of triangle -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
8 replies   

no one has the gut s to solve this?  


common u all r not dumb yaar!


atleast give a try? 

Catalogs Discussion Forums -> Algebra -> prove:(1/sinA)+(1/sinB)+(1/sinC)>=2rt3 , if A,B,C are angles of triangle -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
8 replies   

prove:


(1/sinA)+(1/sinB)+(1/sinC)   2  , if A,B,C are angles of triangle.


ie.prove that 2rt3 is the minimum value of the above.


5 rates to one who answers.


note: if possible plz give an answer in which u prove the above ondependently.ie not using the "to prove" and utimately proving it something like > 0 ,thus true and hence above must be true.

Catalogs Discussion Forums -> Trignometry -> challenging q.......... -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
5 replies   

is it sin22a


THEN ony 30 will satisfy.well then we know


sin22a=(2sinacosa)2


=4(sin2a(1-sin2a))


now put this in your eqn and u should get the ans. 

Catalogs Discussion Forums -> Differential Calculus -> Please prove it ( in a detailed way, if possible)--rates assured -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
2 replies   

dy/dx can be either +1 or -1.


we know cos-1 (cosx)=x ,(pi+x),-x,(-pi-x) depending on the value of x.here we dont know anything about x.(more precisely alpha-x)


using basic trigo)we get y=cos-1(cos *(alpha-x)  or cos-1cos(x-alpha)=alpha -x ,x-alpha etc .etc as above.


here alpha= tan-1(3/2)


on diffrentating we get dy/dx=+1 or -1 (.: alpha is a constant) 

Catalogs Discussion Forums -> Mechanics -> work , power,energy -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
2 replies   

case2:


-1/2 kx2+mgx=0

mgx=1/2kx2

2mg/k=x




initially kx1=mg

.: x1=mg/k




.: x=2x1

Catalogs Discussion Forums -> Physical Chemistry -> ionic equillibrium -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
1 replies   

plzzzzzzz someone ans.


why r goiitians becoming so lazy to answer academic qnts and r are all just answering all time pass type question? r goiitians only interested in aswering simple questions and getting more rates rather than helping others and sharing quality knowledge??

Catalogs Discussion Forums -> Physical Chemistry -> ionic equillibrium -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]
1 replies   

what is definition of a salt


why do AgNO3 and NaIO3 react although both are salts??


isnt it that two salts dont react? if not plz give examples.


rates assured.

 
 
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