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Recent questions tagged q2-b

1.8g of glucose (molar mass =180) are dissolved in 60g of water.Calculate the mole fraction of glucose and water

asked Aug 6, 2014 by sreemathi.v

1 answer

Using binomial expansion,calculate the value of $(98)^{\large\frac{1}{2}}$ correct to three places of decimal.

asked Apr 22, 2013 by sreemathi.v

0 answers

If $C_0,C_1,C_2..........C_n$ denote the coefficient of successive terms in the expansion of the binomial $(1+x)^n$ prove that $C_0+C_2+C_4+.........=C_1+C_3+C_5+.....=2^{n-1}$

asked Apr 18, 2013 by sreemathi.v

0 answers

Given the matrix $A=\begin{vmatrix}1 & 0 & 2\\-2 & 1 & 0\\0 & -1 & 2\end{vmatrix}$,compute $A^{-1}$.

asked Apr 17, 2013 by sreemathi.v

0 answers

Find the adjoint of the matrix A=$\begin{bmatrix}1 & 0 & -1\\3 & 4 & 5\\0 &-6 &-7\end{bmatrix}$ and hence find the matrix $A^{-1}$.

asked Apr 16, 2013 by sreemathi.v

0 answers

Solve the following system of equations using matrices : $x+y+z=6,x-y+z=2,2x+y-z=1$.

asked Apr 16, 2013 by sreemathi.v

0 answers

If $A=\begin{vmatrix}1 & -2 & -3\\2 & 3 & 2\\3 &-3 & -4\end{vmatrix},$find $A^{-1}$ and hence solve the following system of linear equations : $x+2-3z=-4,2x+3y+2z=2,3x-3y-4z=11.$

asked Apr 15, 2013 by sreemathi.v

0 answers

Solve the following linear equations using the matrix method : $x+y+z=9,2x+5y+7z=52,2x+y-z=0$.

asked Apr 12, 2013 by sreemathi.v

1 answer

Using matrix method,solve the following equations :$5x+3y+z=16,2x+y+3z,x+2y+4z=25$.

asked Apr 11, 2013 by sreemathi.v

0 answers

Solve the following system of equations using matrix method : $\large\frac{2}{x}+\large\frac{3}{y}+\large\frac{10}{z}\normalsize=4,\large\frac{4}{x}-\large\frac{6}{y}+\large\frac{5}{z}\normalsize=1,\large\frac{6}{x}+\large\frac{9}{y}-\large\frac{20}{z}\normalsize=2$.

asked Apr 11, 2013 by sreemathi.v

0 answers

Find the product of the matrices A and B where : $A=\begin{pmatrix}-5 & 1 & 3\\7 & 1 &-5\\1 & -1 & 1\end{pmatrix},B=\begin{pmatrix}1 & 1 & 2\\3 & 2 & 1\\2 & 1& 3 \end{pmatrix}$Hence,solve the following equations by matrix method:$x+y+2z=1,3x+2y+z=7,2x+y+3z=2.$

asked Apr 10, 2013 by sreemathi.v

0 answers

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