Matrix Operations | Algebra | Chegg Tutors

Matrix Operations | Algebra | Chegg Tutors

Matrix Operations | Algebra | Chegg Tutors

Basic operations on matrices:
To add or subtract matrices they must have the same number of rows and columns.
Addition: M = A + B; zij = aij + bij (to form a new matrix z, to element in row i, column j of matrix A add element in row i, column j of matrix B)
Subtraction: M = A – B; zij = aij – bij (to element in row i, column j of matrix A deduct element in row i, column j of matrix B)
Multiplication/Division by a scalar: zij = c*aij; m = zij = 1/c*aij = aij/c where c is the constant (scalar)
Multiplication: M = A*B, if the number of columns in A = number of rows in B; zij = ai1*b1j + ai2*b2j + ….aim*bnj (add the products obtained by multiplying elements in each i row of matrix A by elements in each j column of matrix i)

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Algebra tutoring on Chegg Tutors

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About Chris W., Algebra tutor on Chegg Tutors:

University of Pennsylvania, Class of 2007
Math, Computer Science major

Subjects tutored: LaTeX, ACT (math), SAT (math), SSAT (math), Information Technology, Discrete Math, SAT II Mathematics Level 2, Basic Math, Web Design, Numerical Analysis, Geometry, Pre-Calculus, SAT II Mathematics Level 1, GRE, Pre-Algebra, Software Engineering, Set Theory, Applied Mathematics, Computer Certification and Training, Number Theory, Statistics, Linear Algebra, PSAT (math), Linear Programming, Computer Science, Calculus, Trigonometry, Algebra, and Geometry (College Advanced)

TEACHING EXPERIENCE
Over 7 years of experience teaching math at 3 universities and a community college. Courses ranged from Intermediate Algebra to Calculus II and class sizes varied from 2 to over 200 students. Tutoring since 2000 formally and informally, individually and in groups, for courses from Geometry to Differential Equations. Please note that I generally will not be available for audio and video in live lessons but my experience has been that audio and video aren’t really needed.

EXTRACURRICULAR INTERESTS
Hiking, reading, video games, playing the guitar and piano.

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