Vectorcardiography suppose the voltage vector of a healthy heart is given by [0.3, 20.2]. cardiac abnormalities result in changes to this vector. each abnormality can be viewed as a change of a healthy heart voltage vector into a pathological voltage vector through matrix multiplication. for each of the following heart pathologies, find a matrix that produces the pathological voltage vector from a healthy voltage vector. (a) left anterior hemiblock: h =[0.3, 0.2], (b) left posterior hemiblock: h =[20.3, 20.2]
(c) apical ischemia: h =[20.3, 0.2]
(d) chronic obstructive pulmonary disease: h =[0.1, 20.0667]

Alogical argument that is presented in graphical form using boxes and arrows is called?

Solve each quadratic equation by factoring and using the zero product property. n^2 - 49 = 0

Asystem of linear equations with more equations than unknowns is sometimes called an overdetermined system. can such a system be consistent? illustrate your answer with a specific system of three equations in two unknowns. choose the correct answer below. a. yes, overdetermined systems can be consistent. for example, the system of equations below is consistent because it has the solution nothing. (type an ordered pair.) x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 6 b. no, overdetermined systems cannot be consistent because there are fewer free variables than equations. for example, the system of equations below has no solution. x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 12 c. yes, overdetermined systems can be consistent. for example, the system of equations below is consistent because it has the solution nothing. (type an ordered pair.) x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 8 d. no, overdetermined systems cannot be consistent because there are no free variables. for example, the system of equations below has no solution. x 1 equals 2 comma x 2 equals 4 comma x 1 plus x 2 equals 24