Comprehension
Consider the equation \( x^{4}-\lambda x^{2} \) \( +9=0 \).
If the equation has on... VIDEO
Comprehension
Consider the equation \( x^{4}-\lambda x^{2} \) \( +9=0 \).
If the equation has only 2 real roots, then the set of values of \( \lambda \) is
(a) \( (-\infty,-6) \)
(b) \( (-6,6) \)
(c) \( \{6\} \)
(d) \( \phi \)
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