Assume that A and B are nxn matrices. Which one of the following statements is NOT always true? 1. (AB)¯' = B¬Aª if A and B are invertible. 2. A(B+C)= AB+ AC. 3. If AB = BA, then (A+B) = A² +2AB+B² . 4. (AB)' = B' A'. 5. If AB = 0, then A=0 or B= 0.

Q: Determine whether v is in the column space of A, or the null space of A, or both, or neither. -8 -2…

A: First, perform the row reduction to get the row reduction echelon form. Solve Ax=0 to get the…

Q: Aigebia 20 qucricca und Ociie3 All chang 9. An Infinite geometric series has a first term aj = 15…

A:

Q: Which statement regarding the regression is false? the dependent variable is assignment to the…

A: We have to answer question on regression.

Q: Let A > 0 be such that each row (or column) sum of A equals r. Show that p(A) = r

A: Let A>0 be a matrix such that each row or column sum of A is equal to r.Show that:

Q: Using the same data as problem 2 above x y ху 2 7 4 11 5 16 8 12 10 18 Then the value of [ Select ]…

A: Formulae : i )  x¯ = ∑xn ii) y¯ = ∑yn iii) Slope ( b1 ) : iv) Y-intercept ( b0  )  :

Q: Which line has the least rate of change? A. The line passing through (2,4) and (5,13) B. The line…

A: By using rate of change formula, we calculate the least rate of change.

Q: (a) Calculate (a +36). C where a = (0, -1, 0, 1), 6 = (1,-1, 1, -1) and c = (2,2,3, -3) (b)…

A:

Q: 1. Write a linear equation using matrices that passes through the points (-2, -1), (2,5) and (4, 8)

A: Aim: To find the linear equation of line using matrices. The line is passing through -2,-1, 2,5,…

Q: understand

A: We will simplify the expressions.

Q: Q1) For primary producers such as plants, photosynthesis requires carbon dioxide (CO₂), water (H₂O),…

A: Photosynthesis is a process by which plants make glucose and release oxygen with the help of…

Q: A set of measurements X has a mean of 7 and standard deviation of 0.2 for simplicity, a linear…

A: Mean of X = 7 Standard deviation of X = 0.2 Linear transformation Y = a X  + b Mean of Y = 1…

Q: Find the least squares regression line.(−3, 4), (−1, 2), (1, 1), (3, 0)

A:

Q: Consider the matrix A and the reduced row echelon form of A. 1 2 1 41[1 0 -1 A = 4 5 1 7 1 1 6 7 1 8…

A: We will use the definition.

Q: row echelon form

A: in row echelon form  we use row operations to convert given matrix in upper triangular type matrix.…

Q: Chi square is used to test __________________ dependent variables.

A: Solution: Nominal

Q: Write v as a linear combination of u and w, if possible, where u = (3, 1) and w=(3,-2). (Enter your…

A: In mathematics, a linear combination is a mathematical expression or operation that combines…

Q: Count of Income Educ. Income 2. 4 Grand Total 55 169 141 426 355 61 33 125 122 75 39 175 3. 33 43…

A: Probability indicates the chances of occurring an event. It lies between 0 and 1. zero probability…

Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.