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प्रश्न
Choose the correct alternative:
If the planes `vec"r"(2hat"i" - lambdahat"j" + hatk")` = and `vec"r"(4hat"i" + hat"j" - muhat"k")` = 5 are parallel, then the value of λ and µ are
विकल्प
`1/2, 2`
`- 1/2, 2`
`- 1/2, -2`
`1/2, 2`
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उत्तर
`- 1/2, - 2`
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