Given
f(x) =Σ_(x=1) ^n tan((x/2^r )).sec((x/2^(r−1) ))
where r and n εN
g(x) =lim_(n→∝) ((ln(f(x)+tan(x/2^n )) −(f(x)+tan(x/2^n )).[sin(tan(x/2)))/(1+(f(x) + tan(x/2^n ))^n )) = k
for x =(π/4) and the domain of
g(x) is (0 ,(π/2))
where [.] denotes the g.i.f
Find the value of k, if possible
so that g(x) is continuous at
x =(π/4) .
A particle is suspended vertically
from point O by ideal string of length
L. It is given horizontal velocity ′v′.
There is vertical line AB at a distance
(L/8) from P. At some point, it leaves
circular motion and follows projectile
motion. At the instant it crosses AB,
its velocity is horizontal. Find u
Consider a uniform square plate of side
a and mass m. The moment of inertia
of this plate about an axis perpendicular
to its plane and passing through one of
its corners is
A 2.2 kg block starts from rest on a
rough inclined plane that makes an
angle of 25° with the horizontal. The
coefficient of kinetic friction is 0.25. As
the block goes 2 m down the plane, the
mechanical energy of the Earth-block
system changes by
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Let ABCD be a square and M, N points
on sides AB, BC respectably, such that
∠MDN = 45°. If R is the midpoint of
MN show that RP = RQ where P, Q
are the points of intersection of AC with
the lines MD, ND.
Let T_k is the k^(th) term and S_k is the sum
of the first k term in arithmetic progression
If T_3 + T_6 + T_9 + T_(12) + T_(15) + T_(18) = 45
Find S_(20)
Calculate the electric potential at a point P at a distance of 3m of either
charges of +20 μC and − 15μC. which are 25cm apart.
Also calculate potential energy of a +3.5μC placed at point P.
The density of a non-uniform rod of
length 1 m is given by ρ(x) = a(1 + bx^2 )
where a and b are constants and
0 ≤ x ≤ 1. The centre of mass of the rod
will be at
(1) ((3(2 + b))/(4(3 + b)))
(2) ((4(2 + b))/(3(3 + b)))
(3) ((3(3 + b))/(4(2 + b)))
(4) ((4(3 + b))/(3(2 + b)))