If tangent to the curve x = at2, y = 2at is perpendicular to x axis, then its point of contact is:
(a, a)
( 0, a )
( a,0 )
( 0, 0 )
Find ∂2y/∂y∂x for the function u = x/y2 - y/x2
2/y2 + 2/x2
2/y3 + 2/x3
-2/y3 + 2/x3
Tangents to curve y = x3 at x = -1 and x = 1 are
Parallel
Intersecting obliquely
Perpendicular to each other
None of these
If y = cos x, x = π/6, dx = 0.05 then find the value of dy ?
The displacement s of a particle at time 't' is given by s = a cos ωt + b sin ωt.Acceleration at time 't' is.
ω2s
s2/ω2
ω2
-ω2s
The coordinates of the point of the curve y = x2 + 3x + 4 the tangent at which passes through the origin are:
( 2, 14 ), ( -2, 2 )
( 2, 14 ), ( -2, -2 )
( 2, 14 ), ( 2, 2 )
Two towns A and B are 60 km a part A school is to be built to serve 150 students.If the total distance to be traveled by all 200 students is to be as small as possible, then the school should be built at
Town B
Town A
45 km from town B
The point on the curve y2 = x, whose the tangent makes an angle of 45o with x - axis will be given by
( 1/2, 1/4 )
( 1/2, 1/2 )
( 1/4, 1/2 )
On the intervals [0, 1 ] the function x25 ( 1 - x ) 75 takes its maximum value at the point:
1/4
1/2
The equation of the normal of the curve y = x (2 - x ) at the point ( 2, 0 ) is
x - 2y = 2
2x + y = 4
x - 2y + 2 = 0