13.

14.
15.
16.
7.

18.

19.

20.
21.

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3 D 12459
Section B (Short Answer Type)

Answer any ten questions.
Each one carries 2 marks.

3
Find 1 | 2
Find the value of Fa :
Define rational number.
State the product rule and quotient rule on logarithm.
Define limit of a function.
Define orthogonal matrix.

Tf the matrix ^~:

Fin 2
0 £| 088+.

ageing ‏و‎
‎IfA=| 7 0 5\|, find|Al.
6 -4 -l

Define harmonic mean.
Find the marginal cost and average cost if the total cost is 1000 + 100x —10x? + x°.
Total revenue function of a firm is R = 21 x — x”. Find the marginal revenue when 10 units are

` 8010.

Test whether f (x) = 2x? — & + 2 is minimum at x = 2.
Given the regression lines 9% - ஆ + 15 = 0 and 25x -- 6y — 7 = 0. Obtain the means of x and y.
(10 x 2 = 20 marks)
Section C (Short Essay/Prablem Type)

Answer any six questions.
Each one carries 5 marks.

-3 4

Find (ATT
3 sh 0 (87) 8.

For a given matrix a-|

Define coefficient of variation. Obtain coefficient of variation of 20, 22, 19, 22, 23.
Turn over