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Bhawana Burdak 13 hours ago
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Posted by Sristi Pandey 13 hours ago
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Gaurav Seth 13 hours ago
Answer:
The value of k is 3.
Step-by-step explanation:
The given quadratic equation is
It is given that one root of this quadratic equation is reciprocal of the other.
Let the roots be .
We know that,
....(1)
....(2)
Using equation (2) we get
Multiply both sides by 3.
Therefore the value of k is 3.
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R G R 😜 13 hours ago
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🇮🇳🇮🇳🇮🇳Singh🎓 Pk 17 hours ago
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I ❤ My India🇮🇳{ Diya }😇 23 hours ago
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I ❤ My India🇮🇳{ Diya }😇 23 hours ago
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R G R 😜 23 hours ago
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I ❤ My India🇮🇳{ Diya }😇 23 hours ago
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Sia 🤖 11 hours ago
Let a be the first term and d be the common difference of the given A.P. Then,
Sm = Sn
{tex}\Rightarrow \quad \frac { m } { 2 } \{ 2 a + ( m - 1 ) d \} = \frac { n } { 2 } \{ 2 a + ( n - 1 ) d \}{/tex}
{tex} \Rightarrow{/tex} 2a (m - n) + {m (m - 1) - n (n - 1)} d = 0
{tex} \Rightarrow{/tex} 2a (m - n) + {m2 - m - n2 + n}d = 0
{tex} \Rightarrow{/tex} 2a (m - n) + {(m2 - n2) - (m - n)} d = 0
{tex} \Rightarrow{/tex}2a (m - n) + {(m - n) (m +n) - (m - n)} d = 0
{tex} \Rightarrow{/tex} (m - n) {2a + (m + n - 1)d} = 0
{tex} \Rightarrow{/tex} 2a + (m + n - 1)d = 0 {tex} [ \because m - n \neq 0 ]{/tex} ...(i)
Now, {tex} S _ { m + n } = \frac { m + n } { 2 } \{ 2 a + ( m + n - 1 ) d \} = \frac { m + n } { 2 } \times {/tex}0 = 0 [Using (i)]
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