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Recent questions tagged q23
Questions
Prove that the product of the lengths of the perpendiculars drawn from the points $ ( \sqrt{a^2-b^2}, 0)$ and $ ( -\sqrt{a^2-b^2}, 0)$ to the line $ \large\frac{x}{a}$$ \cos \theta + \large\frac{y}{b}$$ \sin \theta = 1$ is $b^2$
cbse
class11
ch10
straight-lines
bookproblem
misc
sec-c
q23
difficult
asked
May 23, 2014
by
thanvigandhi_1
1
answer
Show that $ \large\frac{n^5}{5}$$+\large\frac{n^3}{3}$$+\large\frac{7n}{15}$ is a natural number for all $n \in N$ by using the principle of mathematical induction.
cbse
class11
ch4
mathematical-induction
exemplar
q23
asked
May 6, 2014
by
thanvigandhi_1
0
answers
Prove the following by using the principle of mathematical induction for all $n \in N$ \[\] $ 41^n-14^n$ is a multiple of 27.
cbse
class11
ch4
mathematical-induction
bookproblem
sec3
exercise-4.1
q23
asked
May 1, 2014
by
thanvigandhi_1
1
answer
If $a\cos 2\theta+b\sin 2\theta=c$ has $\alpha$ and $\beta$ as its roots,then prove that $\tan\alpha+\tan \beta=\large\frac{2b}{a+c}$
cbse
math
class11
ch3
trigonometric-functions
exemplar
q23
sec-c
difficult
asked
Apr 20, 2014
by
sreemathi.v
1
answer
Prove : $\tan 4x=\large\frac{4\tan x(1-\tan^2x)}{1-6\tan^2x+\tan^4x}$
cbse
math
class11
ch3
trigonometric-functions
bookproblem
exercise3-3
q23
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 ) $(x^2+1) \cos x$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
misc
p317-318
q23
asked
Apr 14, 2014
by
thanvigandhi_1
1
answer
A green light is incident from the water to the air-water interface at the critical angle $(\theta)$ . Select the correct statement
jeemain
jeemain-2014
physics
q23
medium
asked
Apr 7, 2014
by
meena.p
1
answer
Find $ \lim\limits_{x \to 0} f(x) $ and $ \lim\limits_{x \to 1} f(x) $ where $f(x)=\left\{\begin{array}{1 1}2x+3, &x \leq 0\\ 3(x+1),& x > o\end{array}\right.$
math
cbse
class11
ch13
limits-and-derivatives
bookproblem
limits
exercise13-1
p301-303
q23
asked
Apr 5, 2014
by
thanvigandhi_1
1
answer
Find the sum of $n$ terms of the series $3+7+13+21+31+.............$
cbse
class11
ch9
bookproblem
misc
medium
sec-c
q23
math
sequences-and-series
asked
Apr 2, 2014
by
rvidyagovindarajan_1
1
answer
Which of the following is a ketohexose?
jeemain
aipmt
chemistry
biomolecules
organic-chemistry
cbse
class12
unit16
easy
q23
asked
Mar 27, 2014
by
thanvigandhi_1
1
answer
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