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Question: Answered & Verified by Expert
If x denotes the greatest integer function of x and -32322x-3dx=k, then k+12=
MathematicsDefinite IntegrationTS EAMCETTS EAMCET 2022 (18 Jul Shift 2)
Options:
  • A 7
  • B 8
  • C 10
  • D 12
Solution:
1619 Upvotes Verified Answer
The correct answer is: 10

-32322x-3dx=-32-1-6dx+-1-12-5dx+-120-4dx+012-3dx+121-2dx+132-4dx

=-6x-32-1+-5x-1-12+-4x-120+-3x012+-2x121+-x132

=-6+5+4+3+2+1×12

i.e. k=-212

Now, k+12=-212+12=10

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