MEDIUM
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The acute angle of intersection of the curves x2y=1 and y=x2 in the first quadrant is θ, then tanθ is equal to

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Important Questions on Application of Derivatives

HARD
Two curves aix2+bjy2=1; i=1, 2 where, a1a2, b1b2, a1, a2, b1, b20 may intersect orthogonally if _________.
MEDIUM
The angle between the curves x2+y2=25 and x2+y2-2x+3y-43=0 at (-3,4) is
HARD
If the curves x=y4 and xy=k cut at right angles, then 4k6 is equal to ___ .
MEDIUM
The angle between the curves 2x2+y2=20 and 4y2-x2=8 at a point where they intersect in the 4th quadrant is
MEDIUM
If the curve y=ax and y=bx intersect at angle α, then tanα is equal to
HARD
Let θ be the acute angle between the tangents to the ellipse x29+y21=1 and the circle x2+y2=3 at their point of intersection in the first quadrant. Then tanθ is equal to :
HARD
If P is a point on the parabola y=x2+4 which is closest to the straight line y=4x-1, then the co-ordinates of P are:
EASY
If the curves 2x=y2 and 2xy=K intersect perpendicularly, then the value of K2 is
MEDIUM
If the curves y2=6x,9x2+by2=16 cut each other at right angles, then the value of b is
MEDIUM
If the curves x2a2+y24=1 and y3=16x intersect at right angles, then a2=
MEDIUM
If the curves y2=6x, 9x2+by2=16 intersect each other at right angles, then the value of b is:
EASY
If the two curves x=y2 and xy=k cut each other at right angles, then a possible value of k is
HARD
An angle of intersection of the curves, x2a2+y2 b2=1 and x2+y2=ab, a>b, is :
EASY

The value of 'a' so that the curves y=3ex and y=a3e-x intersect orthogonally is

MEDIUM
The two curves x3-3xy2+2=0 and 3x2y-y3-2=0 intersect at an angle of
EASY
The value of 'a' so that the curves y=3ex and y=ae-x intersect orthogonally is
HARD
If the curves, x2a+y2b=1 and x2c+y2d=1 intersect each other at an angle of 90°, then which of the following relations is TRUE?
HARD
Let Ph, k be a point on the curve y=x2+7x+2, nearest to the line, y=3x-3. Then the equation of the normal to the curve at P is
HARD
A helicopter is flying along the curve given by y-x32=7, x0. A soldier positioned at the point 12, 7, who wants to shoot down the helicopter when it is nearest to him. Then this nearest distance is: