A line of fixed length 2 units moves so that its ends are on the positive |
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a) |
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b) |
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c) |
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d) |
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A line of fixed length 2 units moves so that its ends are on the positive |
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a) |
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b) |
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c) |
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d) |
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(a)
If , then
and
. Hence,
and
. since
is the midpoint of
, so
or
Eliminating , we have