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CBSE Class 11-science Answered

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Asked by araima2001 | 04 Dec, 2016, 11:48: AM
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begin mathsize 16px style The space equation space of space the space parabola space is space given space to space be space straight y equals 4 straight x squared. Normals space at space straight A left parenthesis straight p squared comma space 2 straight p right parenthesis comma space straight B left parenthesis straight q squared comma 2 straight q right parenthesis space and space straight C left parenthesis straight r squared comma 2 straight r right parenthesis space are space concurrent that space is space they space pass space through space straight a space common space point comma space and space hence space the space points space are space conormal space points We space know space that space if space straight A left parenthesis straight p squared comma space 2 straight p right parenthesis comma space straight B left parenthesis straight q squared comma 2 straight q right parenthesis space and space straight C left parenthesis straight r squared comma 2 straight r right parenthesis comma space then space 2 straight p plus 2 straight q plus 2 straight r space equals space 0 rightwards double arrow straight p plus straight q plus straight r space equals space 0 Comparing space this space with space the space quadratic space equation space px squared plus qx plus straight r space equals space 0 comma we space get space straight x equals 1 space to space be space the space root space of space the space given space equation. Clearly comma space the space quadratic space equations space px squared plus qx plus straight r space equals space 0 space and space space straight a left parenthesis straight b minus straight c right parenthesis straight x squared plus straight b left parenthesis straight c minus straight a right parenthesis straight x plus straight c left parenthesis straight a minus straight b right parenthesis space equals space 0 space have space straight a space common space root space that space is space straight x equals 1. So comma space the space correct space option space is space left parenthesis straight d right parenthesis. end style
Answered by Rebecca Fernandes | 12 Dec, 2016, 09:55: AM

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CBSE 11-science - Maths
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Asked by dra | 24 Feb, 2024, 06:35: AM
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CBSE 11-science - Maths
construction of Parabola When Distance between directrix and focus is given
Asked by praveenaditya843 | 22 Dec, 2023, 10:41: AM
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CBSE 11-science - Maths
To construct Different types of conic sections
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Asked by praveenaditya843 | 21 Dec, 2023, 07:39: PM
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CBSE 11-science - Maths
find the coordinates of the centre of a circle passing through the points(0,0),(-2,1)and(-3,2).also , find its radius .
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Asked by shakyajayprakash2006 | 08 Jun, 2022, 05:26: PM
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CBSE 11-science - Maths
Examine whether the point (4, 5) lies outside or inside the circle of equation x^2+y^2-2x-3=0
Asked by sbipo2000 | 23 Feb, 2020, 03:43: PM
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CBSE 11-science - Maths
SIR PLEASE HELP ME WITH THIS QUESTIONS : 1. Find the equation of the tangent to the circle x^2+y^2=16 drawn from the point (1,4). 2. How many triangles can be formed by joining any 3 of the 9 points when i) no 3 of them  are collinear? ii) 5 of them are collinear? 3. AB is a line of fixed length, 6 units, joining the points A(t,0) and B which lies on thepositive y axis. P is a point on AB distant 2 units from A. Express the coordinates of B and P in terms of t. Find the locus of P as t varies. 4. In a triangle ABC, (b^2 - c^2) / (b^2 + c^2) = sin(B - C) / sin(B + C), prove that it is either a right-angled or isoceles triangle.
Asked by kandappan | 08 Feb, 2020, 11:29: AM
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CBSE 11-science - Maths
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Asked by gauravmore604 | 04 Nov, 2019, 03:31: PM
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CBSE 11-science - Maths
The locus of point for which sum of the squares of distances from cordinate axes is 25 is
Asked by Tejravi969 | 19 Aug, 2019, 06:08: AM
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CBSE 11-science - Maths
Find the equation of the ellipse with centre at the origin , major axis on the x- axis and passing through the point (4,3) and (-1,4)..
Asked by Praktu111 | 09 Jun, 2019, 08:18: AM
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CBSE 11-science - Maths
A stadium is in circular shape. Within the stadium some areas have been allotted for a hockey court and a javelin range, as given in the figure. Assume the shape of the hockey court and the javelin range to be square and triangle, resp. The curators would like to accommodate a few more sports in the stadium. Help them by measuring the unallocated region within the stadium.(the radius of the stadium is 200 mts.)  
Asked by rushabh1234 | 23 Jan, 2019, 08:59: PM
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