A helicopter is flying along the curve given by y−x3/2 =7, (x
A soldier positioned at the point 
wants to shoot down the helicopter when it is nearest to him. Then this nearest distance is :
(a)
(b)
(c)
(d)
A helicopter is flying along the curve given by y−x3/2 =7, (xA soldier positioned at the point wants to shoot down the helicopter when it is nearest to him. Then this nearest distance is :
(a)
(b)
(c)
(d)
Question ID - 56952 | SaraNextGen Top Answer
A helicopter is flying along the curve given by y−x3/2 =7, (xA soldier positioned at the point wants to shoot down the helicopter when it is nearest to him. Then this nearest distance is :
(a)
(b)
(c)
(d)
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A helicopter is flying along the curve given by y−x3/2 =7, (x |
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(a) |
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(b) |
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(c) |
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(d) |
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1 Answer
127 votes
Answer Key / Explanation : (c) -
y−x3/2=7(x
x1/2
=−1
x2=
−x
3x2=1−2x
3x2+2x−1=0
3x2+3x−x−1=0
(x+1)(3x−1)=0
∴x=−1(rejected)
x=
y=7+x3/2=7+
AB=
=
=
=
=
Option(c)
127 votes
Answer Link
127