If P=(x , y),F1=(3,0),F2=(-3,0), and 16 ...

If `P=(x , y),F_1=(3,0),F_2=(-3,0),` and `16 x^2+25 y^2=400` , then `P F_1+P F_2` equal 8 (b) 6 (c) 10 (d) 12

A

8

B

6

C

10

D

12

Text Solution

Verified by Experts

The correct Answer is:

C

Topper's Solved these Questions

CIRCLE AND CONICS
MARVEL PUBLICATION|Exercise MISCELLANEOUS MCQs|50 Videos
CIRCLE AND CONICS
MARVEL PUBLICATION|Exercise MISCELLANEOUS MCQs|50 Videos
BERNOULLI TRIALS AND BINOMIAL DISTRIBUTION
MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|79 Videos
PROBABILITY
MARVEL PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|239 Videos

Similar Questions

Explore conceptually related problems

If P=(x,y),F_(1)=(3,0),F_(2)=(-3,0) and 16x^(2)+25y^(2)=400, then PF_(1)+PF_(2) equal 8 (b) 6 (c) 10(d)12

If f(x),g(x) be twice differentiable function on [0,2] satisfying f''(x)=g''(x) , f'(1)=4 and g'(1)=6,f(2)=3,g(2)=9,then f(x)-g(x) at x=4 equals to:- (a) -16 (b) -10 (c) -8

If P={:[(-1,0),(2,-1)]:}andf(x)=x^(2)-2x+2 , then find f(P).

if f(x)=3|x|+|x-2| then f'(1) is equal to a)2 b)1 c)3 d)0

If f(x),g(x) be twice differentiable functions on [0,2] satisfying f''(x)=g''(x)f'(1)=2g'(1)=4 and f(2)=3g(2)=9 then f(x)-g(x) at x=4 equals (A) 0 (B) 10 (C) 8 (D) 2

P(x,y) is any point on ellipse 16x^(2)+25y^(2) =400 . If F_(1)-=(3,0) and F_(2) -=(-3,0) , then prove that PF_(1)+PF_(2) is constant and find its value .

If |f(x)-f(y)|<=2|x-y|^((3)/(2))AA x,y in R and f(0)=1 then value of int_(0)^(1)f^(2)(x)dx is equal to (a) 1 (b) 2 (c) sqrt(2)(d)4

If 8f(x)+6f((1)/(x))=x+5 and y=x^(2)(f(x), then (dy)/(dx) at x=-1 is equal to 0( b) (1)/(14)(c)-(1)/(4)(d) None of these

If f(x) = | x | + [ x ] , then f( -3/2 ) + f( 3/2 ) is equal to : ( a ) 1 ( b ) -1/2 ( c ) 2 ( d ) 1/2

MARVEL PUBLICATION-CIRCLE AND CONICS -MULTIPLE CHOICE QUESTIONS

If distance between foci of an ellipse equals its latus-rectrum , then...
Text Solution
|
Find the sum of the focal distances of any point on the ellipse 9x^...
Text Solution
|
If P=(x , y),F1=(3,0),F2=(-3,0), and 16 x^2+25 y^2=400 , then P F1+P F...
Text Solution
|
The radius of the circle passing through the foci of (x^(2))/(16) + (y...
Text Solution
|
In an ellipse, the distances between its foci is 6 and minor axis is 8...
Text Solution
|
For the ellipse 25x^(2) + 45y^(2) = 9,
Text Solution
|
S and T are foci of an ellipse and B is an end of the minor a...
Text Solution
|
Any point whose x and y co-ordinates satisfy the equations (1 - (x/...
Text Solution
|
Given A -= (0,-1) " and " B = (0,1) . If P (x,y) is a point satisfyi...
Text Solution
|
For the ellipse (x^(2))/(4) + (y^(2))/(3) = 1 , the ends of the two ...
Text Solution
|
If the equation (x^(2))/(16 -K) + (y^(2))/(5-K) = 1 represents an ell...
Text Solution
|
Perimeter of a triangle formed by any point on the ellipse (x^(2))/...
Text Solution
|
If P is any point on the ellipse (x^(2))/(25) + (y^(2))/(9) = 1 whose...
Text Solution
|
If a^(2) + b^(2) = 25 and a focus of the ellipse (x^(2))/(a^(2) ...
Text Solution
|
S and T are foci of an ellipse and B is an end of the minor a...
Text Solution
|
If the lines joining the foci of an ellipse to an end of its minor axi...
Text Solution
|
P and Q are two points on ellipse (x^(2))/(a^(2)) + (y^(2))/(b^(2)) =...
Text Solution
|
The eccentricity of the ellipse which meets the straight line x/7+y/2 ...
Text Solution
|
Find the area of the greatest rectangle that can be inscribed in an el...
Text Solution
|
An arc of a bridge is semi-elliptical with the major axis horizonta...
Text Solution
|