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Grade: 12

                        

A line passes throughthe point P(h,k) is parallel to the x-axis. It forms a triangle with the linesy=x and y=x+2 of area 4h2(4(h)square) then find the locus of the point.

8 years ago

Answers : (2)

saiomkar kandukuri
33 Points
							

y=x andy=x+2 are two parallel lines ......so the triangle cannot be formed by using these two line and other....

so the given question is wrong

7 years ago
ankitesh gupta
63 Points
							

 LOOK IT IS VERY EASY I WILL TELL YOU THE METHOD YOU TRY IT ON YOURSELF IF YOU DONT GET IT THEN REPLY TO ME IF YOU GET IT THEN IT IS GUD...

  NOW YOU CAN FIND THE EQUATION OF LINE PASSING THROUGH (h,k) WITH SLOPE 0 SINCE IT IS PARALLEL  TO X AXIS WHICH WOULD BE (Y-k)=0(X-h)

  THEN SINCE THE LINE INTERSECTS TWO FORM A TRIANGLE . FIND THE COORDINATES OF POINT OF INTERSECTION OF THE LINES THEN YOU WILL HAVE THE THREE COORDINATES OF THE TRIANGLE NOW ARE OF THE TRIANGLE IS SUPPOSE YOU GET THE COORDINATES AS (a,b),(c,d),(e,f). THEN THE AREA IS 1/2 * MODULUS OF THE DETERMINANT 

WHICH COMES OUT TO BE 1/2 * [(ad+cf+eb)-(bc+de+af)] and YOU KNOW THE AREA EQUATE IT TO  4h2  YOU WILL THEN GET A EQUATION ''h'' and ''k''  THEN REPLACE ''h'' by ''x'' and ''k'' by ''y'' YOU WILL GET THE EQUATION OF THE LOCUS 

 

PLZZZZZZZZZZZ DO APPROVE THE ANSWER IF IT HELPED YOU BY CLICKING YES BUTTON1972_74742_Untitled 7.gif

7 years ago
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