Maths-
General
Easy
Question
Vertex of the parabola y2 + 2y + x = 0 lies in the quadrant
- First
- Second
- Third
- Fourth
Hint:
convert the equation into the whole square form to get the vertex.
The correct answer is: Fourth
fourth
converting the equation into the whole square form, we get
(y+1)2= -(x-1)
This gives us the vertex = (1,-1)
This lies in the 4th quadrant.
vertex of the parabola is the point that divides the curve into two symmetric parts.
Related Questions to study
Maths-
The equation of the parabola with focus (3, 0) and the directrix x + 3 = 0 is
the locus of all points which are equidistant from a point called focus and a aline called directrix is known as a parabola. as per this definition, we can solve the given question.
The equation of the parabola with focus (3, 0) and the directrix x + 3 = 0 is
Maths-General
the locus of all points which are equidistant from a point called focus and a aline called directrix is known as a parabola. as per this definition, we can solve the given question.
maths-
Length of the shortest normal chord of the parabola y2 = 4x is-
Length of the shortest normal chord of the parabola y2 = 4x is-
maths-General
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If the tangents and normals at the extremities of a focal chord of a parabola intersect at (x1, y1) and (x2, y2) respectively, then-
If the tangents and normals at the extremities of a focal chord of a parabola intersect at (x1, y1) and (x2, y2) respectively, then-
maths-General
maths-
The common tangents to the circle x2 + y2 = a2/2 and the parabola y2 = 4ax intersect at the focus of the parabola-
The common tangents to the circle x2 + y2 = a2/2 and the parabola y2 = 4ax intersect at the focus of the parabola-
maths-General
maths-
If on a given base triangle b be described such that the sum of the tangents of the base angles is constant (k), then the locus of third vertex is -
If on a given base triangle b be described such that the sum of the tangents of the base angles is constant (k), then the locus of third vertex is -
maths-General
maths-
Set of values of ‘h’ for which the number of distinct common normals of (x – 2)2 = 4(y – 3) and x2 + y2 – 2x – hy – c = 0 (c > 0) is 3, is -
Set of values of ‘h’ for which the number of distinct common normals of (x – 2)2 = 4(y – 3) and x2 + y2 – 2x – hy – c = 0 (c > 0) is 3, is -
maths-General
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PA and PB are the tangents drawn to y2 = 4x from point P. These tangents meet the y-axis at the points A1 and B1 respectively. If the area of triangle PA1 B1 is 2 sq. units, then locus of ‘p’ is -
PA and PB are the tangents drawn to y2 = 4x from point P. These tangents meet the y-axis at the points A1 and B1 respectively. If the area of triangle PA1 B1 is 2 sq. units, then locus of ‘p’ is -
maths-General
maths-
If the chord of contact of tangents from a point P to the parabola y2 = 4ax, touches the parabola x2 = 4by, then the locus of P is a/an -
If the chord of contact of tangents from a point P to the parabola y2 = 4ax, touches the parabola x2 = 4by, then the locus of P is a/an -
maths-General
maths-
AB, AC are tangents to a parabola y2 = 4ax. If l1, l2, l3 are the lengths of perpendiculars from A, B, C on any tangent to the parabola, then -
AB, AC are tangents to a parabola y2 = 4ax. If l1, l2, l3 are the lengths of perpendiculars from A, B, C on any tangent to the parabola, then -
maths-General
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Circle drawn having it’s diameter equal to focal distance of any point lying on the parabola x2 – 4x + 6y + 10 = 0, will touch a fixed line whose equation is -
Circle drawn having it’s diameter equal to focal distance of any point lying on the parabola x2 – 4x + 6y + 10 = 0, will touch a fixed line whose equation is -
maths-General
maths-
AB is a double ordinate of the parabola y2 = 4ax. Tangents drawn to parabola at A and B meets y-axis at A1 and B1 respectively. If the area of trapezium AA1 B1 B is equal to 12a2, then angle subtended by A1B1 at the focus of the parabola is equal to -
AB is a double ordinate of the parabola y2 = 4ax. Tangents drawn to parabola at A and B meets y-axis at A1 and B1 respectively. If the area of trapezium AA1 B1 B is equal to 12a2, then angle subtended by A1B1 at the focus of the parabola is equal to -
maths-General
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The parabola y2 = 4x and the circle (x – 6)2 + y2 = r2 will have no common tangent, if ‘r’ is equal to -
The parabola y2 = 4x and the circle (x – 6)2 + y2 = r2 will have no common tangent, if ‘r’ is equal to -
maths-General
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The name of the conic represented by the equation x2 + y2 – 2xy + 20x + 10 = 0 is-
The name of the conic represented by the equation x2 + y2 – 2xy + 20x + 10 = 0 is-
maths-General
Maths-
From an external point P tangents are drawn to the parabola y2 = 4ax, then the equation to the locus of P when these tangents makes angles θ1 and θ2 with the axis, such that tan θ1 + tan θ2 with the axis, such that tan θ1 + tan θ2 is constant (= b), is -
From an external point P tangents are drawn to the parabola y2 = 4ax, then the equation to the locus of P when these tangents makes angles θ1 and θ2 with the axis, such that tan θ1 + tan θ2 with the axis, such that tan θ1 + tan θ2 is constant (= b), is -
Maths-General
maths-
A point P (t2, 2t) lies on the parabola y2 = 4x, where FP is produced to B where F is focus. If PB = ƒ(t) and point B always lies on the line y – x = 2, then ƒ(t) is equal to-
A point P (t2, 2t) lies on the parabola y2 = 4x, where FP is produced to B where F is focus. If PB = ƒ(t) and point B always lies on the line y – x = 2, then ƒ(t) is equal to-
maths-General