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Questions asked by priyanka.c
Questions
2867
questions
0
answers selected
If $\cos^{-1} x + cos^{-1} y + cos^{-1} z = \pi $ , Evaluate $x^2 + y^2 + z^2 + 2xyz$
cbse
class12
maths
sec-e
ch2
asked
Nov 17, 2016
1
answer
If the function $ f: [1, \alpha) \ implies [ 1, \alpha)$ defined by $f(x) = 2^{x(x-1)}$ is invertible, find $f^{-1}(x)$
cbse
class12
maths
sec-e
ch1
asked
Nov 17, 2016
1
answer
A die which is marked with 1, 2, 3 in red and 4, 5, 6 in green is tossed. Let A be the event 'number is even' and B be the event 'number is red' and Are A and B independent?
cbse
class12
maths
ch13
sec-b
boardexam
2017
asked
Nov 17, 2016
1
answer
$\begin{equation} \int\limits_0^1 \sin^{-1} x \; \mathrm{d} x \end{equation}$
cbse
class12
maths
sec-e
ch7
asked
Nov 17, 2016
1
answer
If the points $A(-1, 3, 2),\; B(-4, 2, -2)$ and $C (5, 5, \lambda)$ are collinear, find the value of $\lambda$
cbse
class12
maths
ch11
sec-e
asked
Nov 16, 2016
1
answer
Differentiate $a^x$ w.r.t x, where a is a constant
cbse
class12
maths
ch5
sec-e
asked
Nov 16, 2016
1
answer
$\tan ^{-1}x +\tan^{-1} \frac{2x}{1-x^2} = 3 \tan ^{-1}(x) \;, |x| < \frac{1}{\sqrt 3}$ . Is this true ? Justify.
cbse
class12
maths
ch2
sec-e
asked
Nov 16, 2016
1
answer
Let f : N $\to$ Y be a function defined as $f(x) = 4x + 3f(x)=4x+3$ where $Y = \{ y \in N ; y = 4x + 3Y=\{ y \in N; y= 4x+3$ for some $ x \in N \}x \in N \}$. If 'f' is invertible.
cbse
class12
maths
ch1
sec-e
asked
Nov 14, 2016
1
answer
$\begin{align*}\int \frac{\sin 4x}{ \sin x} dx \end{align*}$
cbsc
class12
maths
ch7
sec-e
asked
Nov 13, 2016
1
answer
Form the differential equation representing family of curves $y = A \cos (x + B)$ where A and B are parameters
cbsc
class12
maths
ch9
sec-e
asked
Nov 13, 2016
1
answer
Prove that the points A, B and C with position vectors $\overrightarrow{a}, \overrightarrow{b} and \overrightarrow{c}$ respectively are collinear if and only if $\overrightarrow{a} \times \overrightarrow{b} + \overrightarrow{b} \times \overrightarrow{c} + \overrightarrow{c} \times \overrightarrow{a} = 0$
cbsc
class12
maths
sec-e
ch10
asked
Nov 13, 2016
2
answers
It is given that a function $f{x} = x^3 - 6x^2 + ax+ b $ on [1,3] , Rolle's theorem holds with $c = 2 + \frac{1}{\sqrt3}$. Find the value of a and b if f(1) = f(3) = 0
cbsc
class12
maths
sec-e
ch5
asked
Nov 10, 2016
1
answer
Differentiate w . r . t x $\tan^{-1}\bigg[\large\frac{1-\cos x}{sin x}\bigg]; -\pi < x < \pi$
cbsc
class12
maths
sec-e
ch-5
asked
Nov 10, 2016
1
answer
Solve for $x . \begin{vmatrix} x+a & x & x \\ x & x+a & x \\ x & x & x+a \end{vmatrix} = 0 $
cbsc
class12
maths
ch-4
sec-e
asked
Nov 10, 2016
1
answer
Let $F(x) =\begin{pmatrix} \cos x & -\sin x & 0 \\ \sin x & cos x & 0 \\ 0 & 0 & 1 \end{pmatrix} $ Show that F(x) F(y) = F (x+y)
cbsc
class12
maths
ch-3
sec-e
asked
Nov 10, 2016
1
answer
Prove that $ \cos^{-1}x = 2 \sin^{-1} \sqrt{\frac{1-x}{2}}$
cbsc
class12
maths
ch-2
sec-e
asked
Nov 10, 2016
1
answer
Prove that $ \cos^{-1}x = 2 \sin^{-1} \sqrt{\frac{1-x}{2}}$
cbse
class12
ch1
asked
Nov 9, 2016
0
answers
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