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The vlaues of k for which the circles x ^(2) + y ^(2) =1 and x ^(2) + y ^(2) - 4x +k=0 have two comon tangents is |
Answer» <html><body><p>`(- (9)/(4), (9)/(4))`<br/>`(-<a href="https://interviewquestions.tuteehub.com/tag/oo-583684" style="font-weight:bold;" target="_blank" title="Click to know more about OO">OO</a>, - (9)/(4)) <a href="https://interviewquestions.tuteehub.com/tag/uu-719078" style="font-weight:bold;" target="_blank" title="Click to know more about UU">UU</a> ((9)/(4) , oo)` <br/>`(-oo, - (9)/(4)] uu [ (9)/(4) , oo)`<br/><a href="https://interviewquestions.tuteehub.com/tag/none-580659" style="font-weight:bold;" target="_blank" title="Click to know more about NONE">NONE</a> of these </p>Answer :<a href="https://interviewquestions.tuteehub.com/tag/b-387190" style="font-weight:bold;" target="_blank" title="Click to know more about B">B</a></body></html> | |