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Question: Answered & Verified by Expert
The value of lim x ( 3x4 3x+2 ) x+1 3 is equal to
MathematicsLimitsJEE Main
Options:
  • A e 1/3
  • B e 2/3
  • C e 1
  • D e 2
Solution:
2783 Upvotes Verified Answer
The correct answer is: e 2/3
lim x ( 3x4 3x+2 ) x+1 3 = lim x ( 3x+26 3x+2 ) x+1 3 = lim x ( 1 6 3x+2 ) x+1 3 = lim x [ ( 1 6 3x+2 ) 3x+2 6 ] 6 3x+2 . x+1 3 = lim x e 2(x+1) 3x+2 = e 2/3 , { lim x 2(x+1) 3x+2 = 2 3 } .

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