let f(α)=∫_0 ^1 ((ln(1+iαx))/(1+x^2 ))dx
1)determine a explicit form of f(α)
2) calculate ∫_0 ^1 ((ln(1+ix))/(1+x^2 ))dx and ∫_0 ^1 ((ln(1+2ix))/(1+x^2 ))dx.
Two radioactive elements A and B
has half lives of 100 and 50years.
Samples of A and B initial contains
equal numbers of atoms.What is
the ratio of the remaining atoms
of A to that of B after 200years?
If all the words with or without
meaning are written using the
letters of the word QUEEN and
are arranged as in English
dictionary.What is the position
of the word QUEEN?
a)44th b)45th c)46th d)47th
A sound wave of velocity 350m/s
is directed towards the surface of
the water. If the ratio of the
wavelength of sound in air to that
in water 150 ratio 475.Calculate
the velocity of the wave in water.
A 90cm uniform lever has a load
of 30N suspended at 15cm from
one of its ends.If the fulcrum is at
the centre of gravity what is the
force that must be applied to its
other end to keep it in horizontal
equilibrium?