Question
If pλ4+qλ3+rλ+5λ+t=∣∣
∣∣λ2+3λλ−1λ+3λ+12−λλ−4λ−3λ+43λ∣∣
∣∣, the value of t is
∣∣λ2+3λλ−1λ+3λ+12−λλ−4λ−3λ+43λ∣∣
∣∣, the value of t is
Answer: Option B
:
B
Since it is an identity in λ so satisfied by every value of
λ. Now put λ=0in the given equation, we have
t=∣∣
∣∣0−1312−4−340∣∣
∣∣=−12+30=18.
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:
B
Since it is an identity in λ so satisfied by every value of
λ. Now put λ=0in the given equation, we have
t=∣∣
∣∣0−1312−4−340∣∣
∣∣=−12+30=18.
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