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माना :`R rarr R , f (x) = 3x + 2` व्दारा परिभाषित हैं । ज्ञात कीजिए - { x : f (x) = 14 }

Answer» यहाँ f (x) = 3x + 2
`rArr 14 = 3x + 2`
`rArr 3x = 12 `
`rArr x = 4 `
`therefore { x : f (x) = 14 } = {4}` .


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