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One of the best article of this site.
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no value of x satisfies the given relation.hence range of x={phi}
download the image for clear view.
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check if it is a spyware, by running spybot.it is free.
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<do not believe on predictions..
television was invented on June 14, 1923
women started wearing pants in the 1880's in Paris.
women got short hiars in 1920s
it has been long since then therefore no point remains in saying earth wil destroy whenwhen pictures will start moving ( talks about tv) , when women will wear pants like men and will cut short their hair (today's fashion).
I ching's methd of predicting future by coins is simply a game of chance.
11 september doesn't lie within 90 days from 6 june..LOL
u told all the predictions give same date..think again these are only a few of many whose dates coincide..search on google 4 urself..
ENJOY LIFE
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8.9....because of idiot part
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let f(x)=sin(x/3)
g(x)=cos(x)
period of f(x)=3*2pi=6pi
period of g(x)=2pi
therefore period of gof(x)=lcm of period of f(x) and g(x)
=6pi
but there exists a real number T , smaller than 6 pi such that gof(T+x)=gof(x)
and T=3pi
gof(T+x)
=gof(3pi+x)
=cos(sin((3pi+x)/3))
=cos(sin(pi +x/3))
=cos(-sin(x/3))(since svalue of sinx/3 kies in between -1,1
=cos(sin(x/3))
=gof(x)
hence period =3pi
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f(x)=0 for all x belonging to the set of real no.s is such an example.
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condtant functions are periodic..why???
becos..
the value of function gets repested for every real number..with period which is not defined..
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Why does the solubility of alkaline earth
metal carbonates and sulphates in water
decrease down the group?
Solution
The size of anions being much larger
compared to cations, the lattice enthalpy
will remain almost constant within a
particular group. Since the hydration
enthalpies decrease down the group,
solubility will decrease as found for
alkaline earth metal carbonates and
sulphates.
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Why does the solubility of alkaline earth
metal hydroxides in water increase down
the group?
Solution
Among alkaline earth metal hydroxides,
the anion being common the cationic
radius will influence the lattice enthalpy.
Since lattice enthalpy decreases much
more than the hydration enthalpy with
increasing ionic size, the solubility
ncreases as we go down the group.
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The alkaline earth metals burn in oxygen to form the
monoxide, MO which, except for BeO, have
rock-salt structure
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Thermal decomposition of (NH4)2BeF4 is the
best route for the preparation of BeF2
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Lithium nitrate when heated gives lithium
oxide, Li2O, whereas other alkali metal
nitrates decompose to give the
corresponding nitrite
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Lithium unlike other alkali metals forms
no ethynide on reaction with ethyne
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The oxides and the peroxides are colourless
when pure, but the superoxides are yellow or
orange in colour
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Lithium forms monoxide, sodium forms
peroxide, the other metals form
superoxides. The superoxide ion is
stable only in the presence of large cations
such as K, Rb, Cs.
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