Board Paper of Class 12Commerce 2015 Maths (SET 2)  Solutions
General Instructions :
(i) All questions are compulsory.
(ii) Please check that this Question Paper contains 26 Questions.
(iii) Marks for each question are indicated against it.
(iv) Questions 1 to 6 in SectionA are Very Short Answer Type Questions carrying one mark each.
(v) Questions 7 to 19 in SectionB are Long Answer I Type Questions carrying 4 marks each.
(vi) Questions 20 to 26 in SectionC are Long Answer II Type Questions carrying 6 marks each.
(vii) Please write down the serial number of the Question before attempting it.
* Kindly update your browser if you are unable to view the equations.
(i) All questions are compulsory.
(ii) Please check that this Question Paper contains 26 Questions.
(iii) Marks for each question are indicated against it.
(iv) Questions 1 to 6 in SectionA are Very Short Answer Type Questions carrying one mark each.
(v) Questions 7 to 19 in SectionB are Long Answer I Type Questions carrying 4 marks each.
(vi) Questions 20 to 26 in SectionC are Long Answer II Type Questions carrying 6 marks each.
(vii) Please write down the serial number of the Question before attempting it.
* Kindly update your browser if you are unable to view the equations.
 Question 1
If $\mathrm{A}=\left[\begin{array}{ccc}5& 6& 3\\ 4& 3& 2\\ 4& 7& 3\end{array}\right]$, then write the cofactor of the element a_{21} of its 2^{nd} row. VIEW SOLUTION
 Question 2
Write the sum of the order and degree of the differential equation
${\left(\frac{{\mathrm{d}}^{2}\mathrm{y}}{d{x}^{2}}\right)}^{2}+{\left(\frac{\mathrm{dy}}{\mathrm{d}x}\right)}^{3}+\mathit{}{x}^{4}=0.$ VIEW SOLUTION
 Question 3
Write the solution of the differential equation
$\frac{\mathrm{dy}}{\mathrm{dx}}={2}^{\mathrm{y}}$ VIEW SOLUTION
 Question 4
Find the unit vector in the direction of the sum of the vectors $2\hat{i}+3\hat{j}\hat{k}\mathrm{and}4\hat{i}3\hat{j}+2\hat{k}.$ VIEW SOLUTION
 Question 5
Find the area of a parallelogram whose adjacent sides are represented by the vectors $2\hat{i}3\hat{k}\mathrm{and}4\hat{j}+2\hat{k}.$ VIEW SOLUTION
 Question 6
Find the sum of the intercepts cut off by the plane $2x+yz=5,$ on the coordinate axes. VIEW SOLUTION
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