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Recent questions tagged q25
Questions
Prove that number of subsets of a set containing $n$ distinct elements is $2^n$, for all $ n \in N$ by using principle of mathematical induction.
cbse
class11
ch4
mathematical-induction
exemplar
q25
asked
May 6, 2014
by
thanvigandhi_1
0
answers
If $\theta$ lies in the first quadrant and $\cos\theta=\large\frac{8}{17}$,then the value of $\cos(30^{\large\circ}+\theta)+\cos(45^{\large\circ}-\theta)+\cos(120^{\large\circ}-\theta)$ ?
cbse
math
class11
ch3
trigonometric-functions
exemplar
q25
sec-c
difficult
asked
Apr 20, 2014
by
sreemathi.v
1
answer
Prove :$\cos 6x=32\cos ^6x-48\cos^4x+18\cos^2x-1$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
exercise3-3
q25
sec-b
medium
asked
Apr 17, 2014
by
sreemathi.v
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(x+\cos x)(x-\tan x)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q25
asked
Apr 16, 2014
by
thanvigandhi_1
1
answer
Find the derivative of the following functions ( it is to be understood that a, b, c, d, p, q, r and s are fixed non-zero constants and m and n are integers ) $(x+\cos x)(x-\tan x)$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q25
asked
Apr 14, 2014
by
thanvigandhi_1
0
answers
The radiation corresponding to $3 \to 2$ transition of hydrogen atom falls on a metal surface to produce photoelectrons. These electrons are made to enter a magentic field of $3 \times 10^{-4}T$ . If the radius of the largest circular path followed by these electrons is $10.0\; mm$, the work function of the metal is close to :
jeemain
jeemain-2014
physics
q25
medium
asked
Apr 7, 2014
by
meena.p
1
answer
Evaluate $\lim\limits_{x \to 0} f(x)$ where $f(x)=\left\{\begin{array}{1 1}\large\frac{|x|}{x},&x\neq 0\\0,&x=0\end{array}\right.$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
limits
exercise13-1
p301-303
q25
asked
Apr 5, 2014
by
thanvigandhi_1
1
answer
Find the sum of $n$ terms of the series $\large\frac{1^3}{1}+\frac{1^3+2^3}{1+3}+\frac{1^3+2^3+3^3}{1+3+5}+.........$
cbse
class11
ch9
bookproblem
misc
sec-c
difficult
q25
math
sequences-and-series
asked
Apr 2, 2014
by
rvidyagovindarajan_1
1
answer
Which of the following is purine base ?
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
easy
q25
asked
Mar 27, 2014
by
thanvigandhi_1
1
answer
A manufacturing company makes two types of teaching aids A and B of Mathematics for class XII. Each type of A requires 9 labour hours of fabricating and 1 labour hour for finishing. Each type of B requires 12 labour hours of fabricating and 3 labour hours for finishing. For fabricating and finishing, the maximum labour hours available per week are 180 and 30 respectively. The company makes a profit of Rs. 80 on each piece of type A and Rs. 120 on each piece of type B. How many pieces of type A and B should be manufactured per week to get a maximum profit? Make it as an LPP and solve graphically. What is the maximum profit per week?
modelpaper-2014-chennai
cbse
class12
math
sec-c
q25
asked
Mar 25, 2014
by
thanvigandhi_1
1
answer
Two schools $P$ and $Q$ want to award their selected students on the values of Tolerance,Kindness and Leadership. The school $P$ wants to award $Rs.x,\:Rs.y\:and\:\:Rs.z$ each for the three respective values to $3,2\:and\:1$ students respectively with a total award money of $ Rs.2,200.$ School $Q$ wants to spend $Rs.3,100$ to award its 4,1 and 3 students on the respective values (by giving the same award money to the three values as school $P$). If the total amount of award for one prize on each value is $Rs.1,200,$ using matrices, find the award money for each value.
cbse
class12
modelpaper-2014
65-2-3
sec-c
q25
math
asked
Mar 23, 2014
by
rvidyagovindarajan_1
1
answer
Reduction of $CH_3-NC$ with Hydrogen in the presence of $pt$ or $Ni$ as catalyst gives
jeemain
aipmt
chemistry
nitrogen
organic-chemistry
cbse
class12
unit13
q25
medium
asked
Mar 22, 2014
by
thanvigandhi_1
1
answer
Among the following, the maximum amount of carbon is present in
jeemain
cbse
chemistry
class12
unit6
general-principals-and-processes-of-isolation-of-metals
q25
medium
asked
Mar 17, 2014
by
meena.p
1
answer
Which of the following is not a state property?
jeemain
physics
thermodynamics
cbse
class11
class12
q25
easy
asked
Mar 15, 2014
by
thanvigandhi_1
1
answer
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