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The range of values of lambda for which ...

The range of values of `lambda` for which the circles `x^(2)+y^(2)=4` and `x^(2)+y^(2)-4lambda x + 9 = 0` have two common tangents, is

A

`lambda in [ - ( 13)/( 8) , (13)/( 8)]`

B

`lambda gt ( 13)/( 8) ` or `lambda lt - ( 13)/( 8)`

C

` 1 ltlambda lt ( 13)/(8)`

D

None of these

Text Solution

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The correct Answer is:
B
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