WBUT 2013 Mathematics Question Paper ( Paper Code: BM-101)

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Bachelor of Computer Application (BCA)

CS/BCA/SEM-1/BM-101/2013-14

2013

MATHEMATICS

Time Allotted : 3 Hours                                              Full Marks : 70

The figures in the margin indicate full marks.

Candidates are required to give their answers in their own words

as far as practicable.

GROUP – A

(Multiple Choice Type Question)

1.       Choose the correct alternatives for any ten of the following:
                                                                                                10 x 1 = 10

          i)       If ∆=abc+2fgh-af2-bg2-ch2 , then the equation
                   ax2+2hxy+by2+2gx+2fy+c=0  represents a pair of straight lines if

                   a)      ∆>0                               b)      ∆<0

                   c)      ∆=0                               d)      none of these.

          ii)      If the matrix 01-2-103λ-30  is singular then the value            of λ  is

                   a)      0                                    b)      4

                   c)      2                                    d)      -1

          iii)     If A be a matrix whose inverse exists then which of the             following is not true?

                   a)      (AT)-1=(A-1)T             b)      A-1=(detA)-1

                   c)      (A2)-1=(A-1)2             d)      None of these.

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