B.Com. I (Semester (CBCS Pattern) Examination, 2018
Busines mathematics
Day and Date Saturday, 8-12-2018 Total Marks 70
Time 2.30 p.m. to 5.00 p.m.
Instructions Graph paper will be supplied on request.
Use of soundless calculators is allowed.
All questions are compulsory.
Figures to the right indicate full marks.
Assume suitable data, if required.
1. Choose the most appropriate alternative from the following. 14
In LPP, the graph of inequalities is always
linear quadratic
cube none of these
The matrix whose all elements are zero is called as
scalar matrix unit matrix
diagonal matrix null matrix
An equation that relates price per unit with the quantity demanded at that
price is called as function.
Supply Demand Profit Revenue
A null matrix plays the role in matrix addition as the number
does in addition of numbers.
zero one two four
The cost charged for using someone's money for specified length of time
is known as
period principal interest term
Rate of interest means the interest charged per year.
per 5,000 per 100
per 500 per 50,000
An annuity in which the first payment falls due after a gap of 4 certain period
larger than the interval, it is called
annuity due immediate annuity
deferred annuity none of these
If
a cb ad bc, then ad bc is called as of the determinant.
diagonal element expansion
element none of these
10) Cramer's rule helps us to find the values of in simultaneous
equations.
variables diagonal side
rows columns
11) If two rows of a determinant are identical then its value is equal to
1 0 11 2
12) The simple interest on 7,000 for five years at p.a. is
7,510 1,057 1,750 8,750
13) If 15x then the range of the function is the collection of
negative integers imaginary numbers
real numbers none of these
14) A function of the type y and x is called as function.
parametric logarithmic
composite exponential
2. Draw the graph of a profit function 7x2 4x 1. 7