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Recent questions tagged q44
Questions
If $ A=\begin{bmatrix} 0 & 0 & 1 \\ 0 & 1 & 0 \\ 1 & 0 & 0 \end{bmatrix} \;find\;A^2\;Hence\;find\;A^6.$
cbse
class12
additionalproblem
kvquestionbank2012
ch3
q44
p10
math
sec-b
asked
Jan 24, 2013
by
meena.p
0
answers
Solution of $\Large \frac{dy}{dx}$$-y=1,y(0)=1$ is given by \[(A)\;xy=-e^x\quad(B)\;xy=-e^{-x}\quad(C)\;xy=-1\quad(D)\;y=2e^x-1\]
cbse
class12
ch9
sec-a
q44
p196
objective
exemplar
medium
math
asked
Jan 18, 2013
by
sreemathi.v
1
answer
True-or-False: The formula $(\overrightarrow{a}+\overrightarrow{b})^2=\mid{\overrightarrow{a}\mid}^2+\mid{\overrightarrow{b}\mid}^2\;+2\mid\overrightarrow{a}\mid.\mid\overrightarrow{b}\mid$ is valid for non-zero vectors $\overrightarrow{a}$ and $\overrightarrow{b}.$
cbse
class12
ch10
q44
p219
exemplar
easy
sec-a
math
asked
Jan 17, 2013
by
sreemathi.v
1
answer
Evaluate the following:$\int\limits_0^{\Large\frac{\pi}{2}}\large\frac{dx}{(a^2\cos^2x+b^2\sin^2x)^2}\quad\normalsize \text{(Hint:Divide Numerator and Denominator by $\cos^4x)$}$
cbse
class12
ch7
q44
p166
exemplar
sec-c
difficult
math
asked
Jan 14, 2013
by
sreemathi.v
1
answer
The slope of tangent o the curve $x=t^2+3t-8,y=2t^2-2t-5$ at the point (2,-1) is :\[(A)\;\frac{22}{7}\quad(B)\;\frac{6}{7}(C)\;{-6}{7}\quad(D)\;-6\]
cbse
class12
ch6
q44
p139
objective
exemplar
medium
sec-a
math
asked
Jan 11, 2013
by
sreemathi.v
1
answer
A letter is known to have come either from TATA NAGAR or from CALCUTTA.On the envelope,just two consecutive letter TA are visible.What is the probability that the letter came from TATA NAGAR.
cbse
class12
ch13
q44
p277
exemplar
math
sec-b
asked
Jan 9, 2013
by
sreemathi.v
2
answers
True or False: In a LPP, the minimum value of the objective function $Z=ax+by$ is always 0 if origin is one of the corner point of the feasible region.
cbse
class12
ch12
q44
p257
true-or-false
exemplar
sec-a
easy
math
asked
Jan 8, 2013
by
sreemathi.v
1
answer
True or False: The angle between the line $\overrightarrow{r}=(5\hat i-\hat j-\hat k)+\lambda(2\hat i-\hat j\;+\hat k)$ and the plane $\overrightarrow{r}.(3\hat i-4\hat j-\hat k)-5=0$ is $\sin^{-1}\large \frac{5}{2\sqrt 91}.$
cbse
class12
ch11
q44
p239
true-or-false
exemplar
medium
sec-a
math
asked
Jan 7, 2013
by
sreemathi.v
1
answer
Find $\large \frac{dy}{dx}$ of the function expressed in parametric form $x=t+\large\frac{1}{t},$$y=t-\large\frac{1}{t}$
cbse
class12
ch5
q44
p110
short-answer
exemplar
sec-a
easy
math
asked
Dec 31, 2012
by
sreemathi.v
1
answer
The sum of the products of elements of any row with the co-factors of corresponding elements is equal to ________________.
cbse
class12
ch4
sec-a
q44
p83
fitb
exemplar
easy
math
asked
Dec 28, 2012
by
sreemathi.v
1
answer
Find the value of $\alpha$ if $A=\begin{bmatrix}\cos\alpha & \sin\alpha\\-\sin\alpha & \cos\alpha\end{bmatrix}$ and $\;A^{-1}=A'$
cbse
class12
ch3
q44
p58
short-answer
exemplar
sec-b
easy
math
asked
Dec 23, 2012
by
sreemathi.v
1
answer
The value of $\cos(\sin^{-1}x+\cos^{-1}x),|x|\leq 1$ is _____________.
cbse
class12
ch2
q44
p40
fitb
exemplar
easy
sec-a
math
asked
Dec 21, 2012
by
sreemathi.v
1
answer
Let $f:[2,\infty)\rightarrow R $ be the function defined by $f(x)=x^2-4x+5,$ then the range of f is
cbse
class12
ch1
q44
p16
objective
exemplar
math
asked
Dec 19, 2012
by
sreemathi.v
1
answer
Choose the correct answers in the value of $\int\limits_0^1\tan^{-1}\bigg(\frac{\large 2x-1}{\large 1+x-x^2}\bigg)dx\;is$\[(A)\;1\qquad(B)\;0\qquad(C)\;-1\qquad(D)\;\frac{\pi}{4}\]
cbse
class12
bookproblem
ch7
misc
q44
p354
sec-a
medium
math
asked
Dec 2, 2012
by
sreemathi.v
1
answer
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