यदि (p(x)=\lambda x+21) और इसका शून्यक (-7) से बड़ा है, तो \(\lambda>0\) होने पर कौन सी शर्त सही है?
If (p(x)=\lambda x+21) and its zero is greater than (-7), which condition is correct when \(\lambda>0\)?
Explanation opens after your attempt
Correct Answer
C. \(\lambda>3\)
Concept
The zero is \(-\frac{21}{\lambda}\). From \(-\frac{21}{\lambda}>-7\) and \(\lambda>0\), we get \(\lambda>3\).
Why this answer is correct
The correct answer is C. \(\lambda>3\). The zero is \(-\frac{21}{\lambda}\). From \(-\frac{21}{\lambda}>-7\) and \(\lambda>0\), we get \(\lambda>3\).
Exam Tip
शून्यक \(-\frac{21}{\lambda}\) है। \(-\frac{21}{\lambda}>-7\) और \(\lambda>0\) से \(\lambda>3\) मिलता है।
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