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Drishti
Subject: Maths
, asked on 3/3/18
Solve ques4 ,11,14
Answer
1
Drishti
Subject: Maths
, asked on 3/3/18
Solve 5 ques please
Answer
1
Drishti
Subject: Maths
, asked on 3/3/18
Solve 21 ques
Answer
1
Anushka Agrawal
Subject: Maths
, asked on 2/3/18
Please answer question number 20
Q.20. A chord of the circle
${x}^{2}-2ax+{y}^{2}=0$
is drawn to pass through the origin. Show that the locus of the centre of the circle described on this chord as diameter is a circle, passing through the centre of the given circle.
Answer
2
Ian Colaco
Subject: Maths
, asked on 1/3/18
Find the equation of the hyperbola whose foci are ( + or - 3root5, 0) and the length of the latus rectum is 8 units.
Answer
1
Ian Colaco
Subject: Maths
, asked on 1/3/18
Find the equation of the circle which passes through the points (2,-2) , (3,4) and has its centre on the line 2x+2y=7
Answer
1
Anushka Agrawal
Subject: Maths
, asked on 1/3/18
Please answer ques no 4
Q.4. A (- a, 0); B (a, 0) are fixed points. C is a point which divides internally AB in a constant ratio tan
$\alpha $
. If AC & CB subtend equal angles at P, prove that the equation of the locus of P is
${x}^{2}+{y}^{2}+2axsec2\alpha +{a}^{2}=0$
.
Answer
1
Yagyam Aggarwal
Subject: Maths
, asked on 28/2/18
64. If
${z}_{1}and{z}_{2}be{n}^{th}$
roots of unity which subtend a right angle at the origin, then n must be of the form
(1) 4k (2) 4k+1
(3) 4k+2 (4) 4k+3
65. If |2z-1| = 2|z-4| then locus of z is
(l) A circle with centre (1,4) and radius 5
(2) A straight line parallel to imaginary axis
(3) A straight line parallel to real axis
(4) A parabola with focus (1,4) and vertex at (0,0)
Answer
1
Harsh
Subject: Maths
, asked on 24/2/18
for the conic section x^2+4y^2+8y-2x+1,find the coordinates of vertices ,foci, eccentricity, length of major and minor axis and latus rectum
Answer
1
Khushi Rastogi
Subject: Maths
, asked on 23/2/18
Plz.solve ques 3
3). Find equation of O which is concentrate with the O
$3{x}^{2}+3{y}^{2}-12x-18y-5=0withouttouchesy-axis$
Answer
2
Khushi Rastogi
Subject: Maths
, asked on 23/2/18
Plz solve ques no2
Answer
2
Ashwini Upadhya
Subject: Maths
, asked on 22/2/18
Show that the set of all points suchthat the difference of their distances from(4,0) and(-4,0) is always equal to 2 represents a hyperbola
Answer
1
Noel George Cherian
Subject: Maths
, asked on 21/2/18
Find the equation of the ellipse whose eccentricity is ¾, focus on the y-axis and passing through (6, 4). (ii) Find the centre and radius of the circle 3x^ 2 + 3y^ 2 + 12x − 18y − 11 = 0
Answer
1
Amitesh Kumar
Subject: Maths
, asked on 20/2/18
Please fast
$\mathbf{7}\mathbf{.}\mathbf{}If\mathrm{tan}\alpha \mathrm{tan}\beta =-\frac{{a}^{2}}{{b}^{2}},thenthechordjoiningtwopoints\alpha and\beta ontheellipse\frac{{x}^{2}}{{a}^{2}}+\frac{{y}^{2}}{{b}^{2}}=1willsubtendarightangleat\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(a\right)focus\left(b\right)centre\left(c\right)endofmajoraxis\left(d\right)endofminoraxis$
Answer
1
Amitesh Kumar
Subject: Maths
, asked on 20/2/18
Plz fast
$9.\mathrm{The}\mathrm{ratio}\mathrm{of}\mathrm{the}\mathrm{areas}\mathrm{of}\mathrm{triangle}\mathrm{inscribed}\mathrm{in}\mathrm{ellipse}\frac{{\mathrm{x}}^{2}}{{\mathrm{a}}^{2}}+\frac{{\mathrm{y}}^{2}}{{\mathrm{b}}^{2}}=1\mathrm{to}\mathrm{that}\mathrm{of}\mathrm{triangle}\mathrm{formed}\mathrm{by}\mathrm{the}\mathrm{corresponding}\phantom{\rule{0ex}{0ex}}\mathrm{points}\mathrm{on}\mathrm{the}\mathrm{auxiliary}\mathrm{circle}\mathrm{is}\frac{1}{2},\mathrm{then}\mathrm{the}\mathrm{eccentricity}\mathrm{of}\mathrm{the}\mathrm{ellipse}\mathrm{is}\phantom{\rule{0ex}{0ex}}\left(\mathrm{a}\right)\frac{1}{2}\left(\mathrm{b}\right)\frac{\sqrt{3}}{2}\phantom{\rule{0ex}{0ex}}\left(\mathrm{c}\right)\frac{1}{\sqrt{2}}\left(\mathrm{d}\right)\frac{1}{\sqrt{3}}$
Answer
1
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Q.20. A chord of the circle ${x}^{2}-2ax+{y}^{2}=0$ is drawn to pass through the origin. Show that the locus of the centre of the circle described on this chord as diameter is a circle, passing through the centre of the given circle.

Q.4. A (- a, 0); B (a, 0) are fixed points. C is a point which divides internally AB in a constant ratio tan$\alpha $. If AC & CB subtend equal angles at P, prove that the equation of the locus of P is ${x}^{2}+{y}^{2}+2axsec2\alpha +{a}^{2}=0$.

(1) 4k (2) 4k+1

(3) 4k+2 (4) 4k+3

65. If |2z-1| = 2|z-4| then locus of z is

(l) A circle with centre (1,4) and radius 5

(2) A straight line parallel to imaginary axis

(3) A straight line parallel to real axis

(4) A parabola with focus (1,4) and vertex at (0,0)

3). Find equation of O which is concentrate with the O

$3{x}^{2}+3{y}^{2}-12x-18y-5=0withouttouchesy-axis$

$\mathbf{7}\mathbf{.}\mathbf{}If\mathrm{tan}\alpha \mathrm{tan}\beta =-\frac{{a}^{2}}{{b}^{2}},thenthechordjoiningtwopoints\alpha and\beta ontheellipse\frac{{x}^{2}}{{a}^{2}}+\frac{{y}^{2}}{{b}^{2}}=1willsubtendarightangleat\phantom{\rule{0ex}{0ex}}\phantom{\rule{0ex}{0ex}}\left(a\right)focus\left(b\right)centre\left(c\right)endofmajoraxis\left(d\right)endofminoraxis$

$9.\mathrm{The}\mathrm{ratio}\mathrm{of}\mathrm{the}\mathrm{areas}\mathrm{of}\mathrm{triangle}\mathrm{inscribed}\mathrm{in}\mathrm{ellipse}\frac{{\mathrm{x}}^{2}}{{\mathrm{a}}^{2}}+\frac{{\mathrm{y}}^{2}}{{\mathrm{b}}^{2}}=1\mathrm{to}\mathrm{that}\mathrm{of}\mathrm{triangle}\mathrm{formed}\mathrm{by}\mathrm{the}\mathrm{corresponding}\phantom{\rule{0ex}{0ex}}\mathrm{points}\mathrm{on}\mathrm{the}\mathrm{auxiliary}\mathrm{circle}\mathrm{is}\frac{1}{2},\mathrm{then}\mathrm{the}\mathrm{eccentricity}\mathrm{of}\mathrm{the}\mathrm{ellipse}\mathrm{is}\phantom{\rule{0ex}{0ex}}\left(\mathrm{a}\right)\frac{1}{2}\left(\mathrm{b}\right)\frac{\sqrt{3}}{2}\phantom{\rule{0ex}{0ex}}\left(\mathrm{c}\right)\frac{1}{\sqrt{2}}\left(\mathrm{d}\right)\frac{1}{\sqrt{3}}$