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Syllabus

Find the equation of the common tangent of parabola y

^{2}=4ax and x^{2}=4by.Show that the semi latus rectum of the parabola y

^{2}= 4ax is a harmonic mean between the segment of any focal chord.1)

if parabola y^{2}=px passes through point (2,-3),find the length of latus rectum .2) find the value of p so that the equation x^{2}+y^{2}- 2px+ 4y - 12=0 may represent a circle of radius 5 units .3) one end of the diameter of a circle x2+y2-6x+5y-7=0 os (7,-8).find the co-ordinates of other end

an equilateral triangle is inscribed in the parabola y

^{2}=4ax,where one vertex is at the vertex of the parabola.find the length of the side of the triangle.pls answer me as soon as possible.^{2}+2y -3x +5 =0.The focus of parabola is (1,5) and its directrix is x + y + 2 = 0. Find the equation of the parabola, its vertex and length of latus rectum.

find the focus and equation of parabola whose vertex is (6,-3) and diretrix is 3x - 5y + 1 = 0.

the line lx + my +n=0 is a normal to the parabola y^2 = 4ax if

find the equation of the circle circumscribing the triangle formed by the lines x + y = 6, 2x + y = 4 and x + 2y = 5

find the equation of the circle concentric with the circles x^2 + y^2 -4x +6y-3=0 and of double its (1) circumference (2) area

Calculate the coordinates of the foot of perpendicular from the point (-4,2) to the line 3x + 2y = 5. also find the equation of the smallest circle passing through (-4,2) and having its centre on the line 3x + 2y = 5

find the locus of the mid point of the portion of the line x cosa +yp sin a = p which is intercepted between the axis ??

Find the equation of the circle which has its centre at the point (3,4) and touches the straight the line 5x+12y-1=0.

Find the equqtion of the circle which touches the axes and whose centre lies on x-2y=3.

A circle whose centre is the point of the intersection of the lines 2x-3y+4=0 and 3x+4y-5=0 passes through the origin. find its equation.

A circle of radius 4 units touches the coordinate axes in the first quadrant. Find the equation of its images with respect to the line mirrors x=0 and y=0.

One diameter of the circle circumscribing the rectangle ABCD is 4y=x+7. If the coordinates of A and B are (-3,4) and (5,4) respectively. Find its equation.

Find the equation of the hyperbola having its foci at (0,root14) and (0,-root14) and passing through the point P(3,4)...

Find the equations of circle passing through the points (1,1),(2,2) and whose radius is 1 units?

if vertex is at (6,-3),& directrix is 3x-5y+1=0,find focus &equation of parabola

Prove that (-1,6), (5,2), (7,0), and (-1,-4) are concyclic.

e

if y = 2x is a chord of the circle x

^{2}+ y^{2}- 10x =0find the equation of the circle with this chord as diameter

The centre of a circle passing through the points (0,0) & (1,0) & touching the circle x2+y2=9 is: ans is (1/2 , +-root2)..explainAB is a chord of circle x2+y2=25 . The tangents of A & B intersect at C. If (2,3) is the mid-point of AB , the area of quadrilateral OACB is:ams is 50root (3/13) plzz explain3. Extremities of a dagonal of a rectangle are (0,0) & (4,3).Find the equations of the tangents to the circumcentre ofthe reactangle which are parallel to this diagonal.4. Find the equ. of circle described on the common cord of the circles x2+y2-4x-5=0 & x2+y2+8y+7=0 as diameter.ans is x2+y2-2x+4y+1=0..explain.The parametric equations of a parabola are x=t

^{2}+1, y=2t+1.The cartesian equation of its directrix isa) x=0 b)x+1=0 c)y=0 d) none of these

find the equation of the circle passing through origin and cutting off intercepts a and b from x axis and y axis

^{2}+y^{2}-6x+4y-36=0 represents a circle.Also find its centre and radius.one diameter of the circle circumscribing the rectangle ABCD is 4y=x+7.If the coordinates of A & B are (-3,4) &(5,4) respectively , find the equation of the circle.

QFind the equation of the hyperbola with centre as the origin, transverse axis along x - axis, ecentricity √5 and the sum of whose semi - axes is 9.Find the standard equation of ellipse whose focus is (1,0), the directrix is x+y+1=0 and eccentricity is 1/root2

if A(x

_{1},y_{1}), B(x_{2},y_{2}), and C(x_{3},y_{3}) are the vertices of a triangle, then find the coordinates of the orthocentre, circumcentre, centroid and incentre of the triangle.A circle of constant radius 'a' passes through origin 'O' and cuts the coordinate axes in points P and Q, then the equation of the locus of the foot of perpendicular from O to PQ is

(a) (x^2+y^2)(1/x^2+1/y^2)=4a^2

(b) (x^2+y^2)(1/x^2+1/y^2)=a^2

(c) (x^2+y^2)^2(1/x^2+1/y^2)=4a^2

(d) (x^2+y^2)(1/x^2+1/y^2)=a^2

a tangent to the ellipse x

^{2}+ 4y^{2}=4 meets the ellipse x^{2}+2y^{2}=6 at P and Q.the angle between the tangents at P and Q of the ellipse x^{2}+2y^{2}=6if the line 2x - y +1 = 0 touches the circle at the point (2,5) and the center of the circle lies on the line x+y -9 =0 find the eqn of circle

3x-4y+1=0 at (1,1) and having radius 10 unit.

the tangent to curv y= x^2 + 6 at a point 1,7 touches the circle x^2+y^2+16x+12y+c=0 at a point q then the coordinates of q are :

ans = -6,-7

Find the equation of the circle passing through the points (4, 1) and (6, 5) and whose centre is on the line 4

x+y= 16.A tangent to the ellipse 4x2+9y2=36 is cut by the tangent at the extremities of the major axis at T and T'. The circle on TT' as diameter passes through the point

(A) (0-$\sqrt{}$5) (B) ( $\sqrt{}$ 5, 0 )

(C) (0,0) (D) (3,2)

The foci of a hyperbola coincide with the foci of the ellipse x2/25 + y2/9=1.Find the equation of the hyperbola,if its eccentricity is 2.

^{2}/ 4 ) + ( y^{2}/9 ) .The equations of the tangents drawn from the origin to the circle x

^{2}+ y^{2}- 2rx- 2hy + h^{2}=0 are :^{2}-r^{2})x-2rhy=0, x=0^{2}-r^{2})x + 2rhy=0,x=0.how can we derive standard equation of ellipse

In case of parabola

y= x

^{2}-2x-3Find:

a)Vertex:

b)Axis:

c)Focus:

d)Directrix:

e)Latus Rectum:

Find the equation of parabola :

vertex =(2,1)

directrix : x = y-1

if the focus of a parabola is (-2,1) and equation of the directrix is x+y=3, find the vertex of the parabola

(A) straight line parallel to x-axis (B) straight line parallel to y-axis

(C) circle of radius sq.rt.2 (D) circle of radius sq.rt.3

given directrix is 3x-5y+1=0 and vertex is (-6,5),find focus and eqn of parabola

prove that the centres of the three circles x^2+y^2-4x-6y-12=0, x^2+y^2+2x+4y-5=0 and x^2+y^2-10x-16y+7=0 are collinear

Please do this question both by Maxima and minima and simple method . Please please please do it by both the methods . Do not forget to do it by both the methods .

A man running a race course notes that the sum of the distances from the two flag posts from him is always 10m and the distance between the flag posts is 8 metres. Find the equation of the path traced by the man.

find equation of image of circle whose equation is x

^{2}+y^{2}+8x-16y+64=0 in the line mirror x=0If P(-3,2) is one end of the focal chord PQ of the parabolay^2+4x+4y=0, then the slope of the normal at Q is_{1}^{2},2at_{1}) , (at_{2}^{2},2at_{2}) on the parabola y^{2}=4ax are at right angles if______{1}t_{2}= -2_{1}t_{2}= 1_{1}t_{2}= 2_{1}t_{2 }= -1the angle subtended by common tangents of two ellipses 4(x-4)

^{2 }+25y^{2}=100 4(x+1)^{2}+ y^{2}=4 at the origin (in degrees) isFind the eccentricity, foci,vertices and the length of the latus rectum of the ellipse x

^{2}+4y^{2}+8y-2x+1=0find the equation of circle whose centre is the point of intersection of the lines 2x-3y+4=0 and 3x+4y-5=0 passes through the origin.

find the equation of circle which passes through the centre of the circle x

^{2}+y^{2}-4x-8y-41=0 and is concentric with x^{2}+y^{2}-2y+1=0prove tht points (2,-4)(3,-1)(3,-3)(0, 0)are concyclic

answer fast.urgent

find the equation of ellipse .the distance between foci is 8 unit and the distance between directrix is 18 units.

what is co-axial circle how to determine its equation and also tell its figure

^{2}/a^{2 }+y^{2}/b^{2}is b^{2}

Show that the circle on the chord xcosα + ysinα - p = 0 of the circle x

^{2}+y^{2}= a^{2}as diameter is x^{2}+ y^{2}- a^{2}-2p(xcosα +ysinα -p)=0write the equation of the axis of the parabola Y

^{2}= 16x ?^{2}+y^{2}-4x=0 which is bisected at the point (1,1).{Please mention the requires formula in details)

Find the centre and the radius of the equation 3x

^{2}+ 3y^{2}+ 6x -4y -1 =0 of the circle.Find the distance between the chords of contact of the tangent to the circle x

^{2 }+y^{2 }+2gx+2fy+c=0 from the origin and the point (g,f) .x^{2}+y^{2}= 25 intercepts chords of length 8 units have equations(a) $2x+3y=13,x+5y=17$

(b) $y=3,12x+5y=39$

(c) $x=2,9x-11y=51$

(d) none of these

the minimum area of triangle formed by tangents to ellipse x

^{2}/a^{2}+y^{2}/b^{2}=1 and the coordinate axes isabasquare+bsquare)/2a+b)square/2asquare+ab+bsquare)/3A circle of radius 2 lies in the first quadrant and touches both the axis.Find the equation of the circle with the centre at (6,5) and touching the above circle externally.

^{2}+y^{2}+6x+4y-5=0 and x^{2}+y^{2}-6x-8y+1=0 and whose radius is 3.2.Find the equation of the circle which passes through the points intersection of x

^{2}+y^{2}-4=0 and x^{2}+y^{2}-2x-4y+4=0 and touches the line x+=0.If P is any point on hyperbola whose axis are equal,prove that SP.S'P=CP

^{2 }?Find the equation of the circle with radius 5 whose centre lies on x-axis & passes through the point (2,3)?

In an ellipse, x

^{2}/a^{2}+ y^{2}/b^{2}= 1, a>b, if the focal distances of a point on the ellipse ( the point is neither on X-axis nor on Y-axis ) are r_{1}and r_{2}, then find the length of the normal drawn at this point ( length of normal means the length of the portion of the normal between the point and the major axis ) ?DO THIS PLEASE FAST ???? I HAVE NOT RECIEVE MY ANSWERS OF THE OTHER QUESTIONS TILL NOW CAN YOU PLEASE HELP ME FAST ????