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Recent questions tagged modelpaper-2012
ASK
Solve the following differential equation : $ x\: \log\: x\: \frac{dy}{dx}+y=\large\frac{2}{x}$$\log\:x $
cbse
class12
modelpaper-2012
sec-b
q20
modelpaper-2014
math
asked
Feb 9, 2013
by
thanvigandhi_1
1
answer
Find the area of the smaller region boundary by the ellipse \( \large\frac{x^2}{9}+\large\frac{y^2}{4}=1\) and the straight line \(\large \frac{x}{3}+\frac{y}{2}=1 \).
cbse
class12
modelpaper-2012
sec-c
q25
modelpaper-2014
q27
math
asked
Feb 2, 2013
by
thanvigandhi_1
1
answer
Prove that $ \begin{vmatrix} a^2&bc&ac+c^2\\ a^2+ab& b^2& ac\\ ab&b^2+bc&c^2 \end{vmatrix}=4\,a^2\;b^2\;c^2. $
cbse
class12
bookproblem
ch4
misc
q6
p141
medium
sec-b
modelpaper-2012
modelpaper-2014
math
asked
Nov 29, 2012
by
balaji.thirumalai
1
answer
The sum of the perimeter of a circle and square is \(k\), where \(k\) is some constant. Prove that the sum of their areas is least when the side of square is double the radius of the circle.
cbse
class12
bookproblem
ch6
misc
q10
242
sec-b
easy
modelpaper-2014
modelpaper-2012
q28
math
asked
Nov 28, 2012
by
thanvigandhi_1
1
answer
A cottage industry manufactures pedestal lamps and wooden shades, each requiring the use of a grinding/cutting machine and a sprayer. A cottage industry manufactures pedestal lamps and wooden shades, each requiring the use of a grinding/cutting machine and a sprayer. It takes 2 hours on grinding/cutting machine and 3 hours on the sprayer to manufacture a pedestal lamp. It takes 1 hour on the grinding/cutting machine and 2 hours on the sprayer to manufacture a shade. On any day, the sprayer is available for at the most 20 hours and the grinding/cutting machine for at the most 12 hours. The profit from the sale of a lamp is Rs 5 and that from a shade is Rs 3. Assuming that the manufacturer can sell all the lamps and shades that he produces, how should he schedule his daily production in order to maximise his profit?
cbse
class12
bookproblem
ch12
sec2
q6
p520
sec-c
medium
math
modelpaper-2012
modelpaper-2014
65-2-3
q23
asked
Nov 16, 2012
by
fingeazy
1
answer
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