- Hvor mange desimaler har desimaltallet over? - Hvor mange enere har desimaltallet? - Hvor mange tideler har desimaltallet?

\[ -\quad-x_{1}+2 x_{2}-7 x_{3}=4 \] 3. (30 points) Solve the system of linear equations using Gauss-Jordan method. Find the rank of the matrix of this system. Indicate dependent and independent variables. Find the fundamental solution set (write the answer as a linear combination of particular vectors) \[ \begin{array}{l}x_{1}+3 x_{2}+2 x_{3}-3 x_{4}=0 \\ 2 x_{1}+6 x_{2}+3 x_{3}-4 x_{4}=0 \\ 3 x_{1}+9 x_{2}+4 x_{3}-5 x_{4}=0\end{array} \]

\( x^{2}\times \frac{d}{dx}(y)+y^{2}=0 \)

\( 2 x ^ { 2 } + 3 x y - 1 \)

6) \( 30 \% \) of \( 600=\ldots(1.8,18,180,1800) \)

h) \( \int \frac{3+6 x+4 x^{2}-2 x^{3}}{x^{2}\left(x^{2}+3\right)} d x \)