Use Gauss-jordan method to find the inverse of matrix\(\begin{bmatrix}8&4&3\\2&1&1\\1&2&1\end{bmatrix}\)

Solve thehelp of matrix the simultaneous equations :

\(x+y+z=3, x+2y+3z=4, x+4y+9z=6\)

Solve the system of equations

\(2x_{1}+x_{2}+2x_{3}+x_{4}=6\)

\(4x_{1}+3x_{2}+3x_{3}-3x_{4}=-1\)

\(6x_{1}-6x_{2}+6x_{3}+12x_{4}=36\)

\(2x_{1}+2x_{2}-x_{3}+x_{4}=10\)

Using matrix mathod , show that the equations

3x+3y+2z=1,

x+2y=4,

10y+3z=-2,

2x-3y-z=5

are consistent and hence obtain the solution for x,y,and z.

For what value of the parameter \(\lambda ,\mu\)do the system of equations

1) no solution 

2) unique solution

3) more than one solution

\(x+y+z=6,x+2y+3z=10,x+2y+\lambda{z}=\mu\)

A, B and C can do a piece of work in 20, 30 and 60 days respectively. 
In how many days can A do the work if he is assisted by B and C on every third day?

A : 12days
B : 15days
C : 16days
D : 18days

Find the value of integration:

\(\int{(3X+5)^{3}}dx\)

Find the value of integration:

\(\int\frac{2x+4}{5x+3}dx\)

Find the root of equation:

\(3x^2+2x+4\)

Evaluate :

\(8x^{2}+5x+3 =0\) using this

\(x = {-b \pm \sqrt{b^2-4ac} \over 2a}\)

0.08% of 120% of 50000 is equal to_____?