Question 3 X1+2x2 -2x1-4x2 :X1, X2 real numbers is a subspace of R3. Then dim H = %3D %3D 3x1+6x2

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Q: find x and y if (2x+1,y)=(5x+4, -7)

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Q: Find matrix X:   3.     6     5     4     -2   *X=     18     49     -20     6

A: The detailed solution is given below Thank you

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Linear Algebra

In mathematics, problems can be solved by the arithmetic operators like addition, subtraction, multiplication, and division. In algebra, we represent the numbers by any letter called a variable. If these variables are of degree 1, then it is studied under linear algebra. The first-degree equations involving algebraic expressions are called linear equations. That is, if you represent it by drawing a graph you will get a straight line.