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x – 2y + 4 = 0 is a common tangent to y2 = 4x &  +  = 1. Then the value of b and the other common tangent are given by
  • a)
    b = √3 ;x + 2y + 4 = 0
  • b)
    b = 3; x + 2y + 4 = 0
  • c)
    b = √3 ;x + 2y– 4 = 0
  • d)
    b = √3 ; x – 2y – 4 = 0
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
x –2y + 4 = 0 is a common tangent to y2= 4x &+= 1. Then the ...
Equation of tangent of ellipse is
y=mx±+ ..............(i)
Given equation is x−2y+4=0 .........(ii)
Since (i) & (ii) are same, comparing them, we get
m=1/2&a2m2 + b2 = 2
⇒4*1/4+b2=4 
b=±3
Equation of tangent of parabola
y=mx+1/m .........(iii)
by (i) & (iii)
1/m^2= a2m2+b2
on solving it we get m=±1/2
with m = −1/2 , we get x+2y+4=0 
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Most Upvoted Answer
x –2y + 4 = 0 is a common tangent to y2= 4x &+= 1. Then the ...
Use Cond Of tangency To find B Then Apply This In Other parts to get right tangent
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Community Answer
x –2y + 4 = 0 is a common tangent to y2= 4x &+= 1. Then the ...
Equation of tangent of ellipse is
y=mx±+ ..............(i)
Given equation is x−2y+4=0 .........(ii)
Since (i) & (ii) are same, comparing them, we get
m=1/2&a2m2 + b2 = 2
⇒4*1/4+b2=4 
b=±3
Equation of tangent of parabola
y=mx+1/m .........(iii)
by (i) & (iii)
1/m^2= a2m2+b2
on solving it we get m=±1/2
with m = −1/2 , we get x+2y+4=0 
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x –2y + 4 = 0 is a common tangent to y2= 4x &+= 1. Then the value of b and the other common tangent are given bya)b = √3 ;x + 2y + 4 = 0b)b = 3; x + 2y + 4 = 0c)b = √3;x + 2y–4 = 0d)b = √3; x –2y –4 = 0Correct answer is option 'A'. Can you explain this answer?
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x –2y + 4 = 0 is a common tangent to y2= 4x &+= 1. Then the value of b and the other common tangent are given bya)b = √3 ;x + 2y + 4 = 0b)b = 3; x + 2y + 4 = 0c)b = √3;x + 2y–4 = 0d)b = √3; x –2y –4 = 0Correct answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about x –2y + 4 = 0 is a common tangent to y2= 4x &+= 1. Then the value of b and the other common tangent are given bya)b = √3 ;x + 2y + 4 = 0b)b = 3; x + 2y + 4 = 0c)b = √3;x + 2y–4 = 0d)b = √3; x –2y –4 = 0Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for x –2y + 4 = 0 is a common tangent to y2= 4x &+= 1. Then the value of b and the other common tangent are given bya)b = √3 ;x + 2y + 4 = 0b)b = 3; x + 2y + 4 = 0c)b = √3;x + 2y–4 = 0d)b = √3; x –2y –4 = 0Correct answer is option 'A'. Can you explain this answer?.
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