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Recent questions tagged p52

If a matrix has 13 elements.What are the possible orders it can have? (Note: This question has been split into 2 questions)

asked Mar 19, 2013 by sreemathi.v

1 answer

In the matrix $A=\begin{bmatrix} a & 1 & x \\ 2 & \sqrt 3 & x^2 y \\ 0 & 5 & \frac{2}{5} \end{bmatrix}$, write the elements $a_{23}$, $a_{31}$, $a_{12}$

asked Mar 4, 2013 by sreemathi.v

1 answer

In the matrix $A=\begin{bmatrix} a & 1 & x \\ 2 & \sqrt 3 & x^2 y \\ 0 & 5 & \frac{2}{5} \end{bmatrix} write:(ii) Element\; of \;the\; matrices.$

asked Mar 4, 2013 by sreemathi.v

1 answer

What is the order of the matrix $A=\begin{bmatrix} a & 1 & x \\ 2 & \sqrt 3 & x^2 y \\ 0 & 5 & \frac{2}{5} \end{bmatrix}$

asked Dec 21, 2012 by sreemathi.v

1 answer

If a matrix has 28 elements, what are the possible orders it can have?

asked Dec 21, 2012 by sreemathi.v

1 answer

Prove that \[tan^{-1} \sqrt{x} = \frac{1}{2} cos^{-1} \;\; \bigg(\frac{1-x}{1+x}\bigg), x\in [0,1]\]

asked Nov 29, 2012 by vaishali.a

1 answer

prove that \[tan^{-1} \left ( \frac {{\sqrt {1+x}}-{\sqrt {1-x}}}{{\sqrt {1+x}}+{\sqrt {1-x}}} \right ) = \frac {\pi}{4} -\frac{1}{2} cos^{-1}x,-\frac{1}{\sqrt2} \leq x \leq 1 \]

asked Nov 29, 2012 by vaishali.a

1 answer

Prove that \[cot^{-1} \left ( \frac {{\sqrt {1+sinx}}+{\sqrt {1-sinx}}}{{\sqrt {1+sinx}}-{\sqrt {1-sinx}}} \right ) = \frac {x}{2} , x \in \left ( 0, \frac{\pi}{4} \right )\]

asked Nov 29, 2012 by vaishali.a

1 answer

Prove that \[\frac{9 \pi}{8} - \frac{9}{4} sin ^{-1}\frac{1}{3}= \frac{9}{4} sin^{-1}\frac{2\sqrt 2}{3}\]

asked Nov 29, 2012 by vaishali.a

1 answer

Solve the following \[2tan^{-1} (cos x) = tan^{-1} (2\, cosec\, x) \]

asked Nov 29, 2012 by vaishali.a

1 answer

Solve the following $tan^{-1} \frac{1-x}{1+x} =\frac{1}{2} tan^{-1} x,(x>0)$

asked Nov 29, 2012 by vaishali.a

2 answers

Choose the correct answer $\sin (\tan^{-1}x), |x| <1 $ is equal to

asked Nov 28, 2012 by vaishali.a

1 answer

Choose the correct answer. If \(\sin^{-1}(1-x) -2 \sin^{-1} x=\large\frac {\pi}{2}, \) then \(x\) is equal to

asked Nov 28, 2012 by vaishali.a

1 answer

What is the value of: \[tan^{-1} \bigg( \frac {x}{y} \bigg) -tan^{-1} \frac {x-y}{x+y} \]

asked Nov 28, 2012 by vaishali.a

1 answer

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