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A tangent at (x1,y1) to the curve y=x3+2x2+4 and passes through origin, then (x1,y1) is

asked Jun 25, 2022 in Uncategorized by anonymous

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A circle of equation x2+y2+ax+by+c= 0 passes through (0, 6) and touches y=x2 at (2, 4). Find a+c.

asked Jun 25, 2022 in Uncategorized by anonymous

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What is the general solution of sin^2 x+ sin^2 2x=sin^2 3x?

asked Dec 1, 2021 in Uncategorized by Doubtly (98.9k points)

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One of the diameter of the circle circumscribing the rectangle ABCD is 4y = x + 7. If A and B are the points

asked Jun 29, 2021 in Uncategorized by Doubtly (98.9k points)

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consider statement-1 is a fallacy. statement-2 is a tautology

asked Jun 15, 2021 in Uncategorized by anonymous

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let a=j-k and c=i-j-k. then the vector b satisfying ab+c=0 and a.b=3 is

asked Jun 11, 2021 in Uncategorized by Doubtly (98.9k points)

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If u , v ,w are non-coplanar vectors and p,q are real numbers, then the equality

asked Jun 11, 2021 in Uncategorized by Doubtly (98.9k points)

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If α, β and γ are three consecutive terms of a non-constant G.P. such that the equations

asked Jun 4, 2021 in Uncategorized by Doubtly (98.9k points)

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The Boolean expression ∼(p⇒(∼q)) is equivalent to :

asked Jun 4, 2021 in Uncategorized by Doubtly (98.9k points)

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A triangle has a vertex at (1, 2) and the mid points of the two sides through it are (-1, 1) and (2, 3). Then the centroid of this triangle is:

asked Jun 3, 2021 in Uncategorized by Doubtly (98.9k points)

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A plane which bisects the angle between the two given planes 2x – y + 2z – 4 = 0 and x + 2y + 2z – 2 = 0, passes through the point :0

asked Jun 3, 2021 in Uncategorized by Doubtly (98.9k points)

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The equation of the common tangent to the curves y^2 = 16x and xy = - 4 is

asked Jun 3, 2021 in Uncategorized by Doubtly (98.9k points)

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The equation of the common tangent to the curves y^2 = 8x and xy = - 1 is

asked Jun 3, 2021 in Uncategorized by Doubtly (98.9k points)

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The general solution of the differential equation (y^2 – x^3 )dx – xydy = 0 (x ≠ 0) is :

asked Jun 3, 2021 in Uncategorized by Doubtly (98.9k points)

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Let a ∈ (0,π/2) be fixed. If the integral ∫ tan x + tan α/tan x - tan α dx = A(x) cos 2α + B(x) sin 2α + C, where C is a

asked Jun 3, 2021 in Uncategorized by Doubtly (98.9k points)

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1 answer 519 views

Suppose that f is differentiable for all x and that f’(x) ≤ 2 for all x. If f(1) = 2 and f(4) = 8, then f(2) has the value equal to

asked Jun 1, 2021 in Uncategorized by Doubtly (98.9k points)

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1 answer 341 views

The system of linear equations x + y + z = 2 , 2x + 3y + 2z = 5 , 2x + 3y + (a2 – 1)z = a + 1

asked May 31, 2021 in Uncategorized by Doubtly (98.9k points)

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1 answer 589 views

A aeroplane is flying horizontally with speed of 432 km/hr at height h meter from ground. Its angle of elevation

asked Apr 13, 2021 in Uncategorized by Topper11 (2.8k points)

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1 answer 171 views

If A=[ 1 2 2 2 1 2 2 2 1] and A^-1 exists and A≠0 , then (A^2-4A)A^-1=

asked Apr 12, 2021 in Uncategorized by Topper11 (2.8k points)

+1 vote

1 answer 293 views

Given that x = -9 is a root of ||The other two roots are ______ and ________ .

asked Apr 11, 2021 in Uncategorized by Doubtly (98.9k points)

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