92 results authored by Marie Nicholson  search across all users.

Question in Marie's Logic workspace
Create a truth table for a logical expression of the form $((a \operatorname{op1} b) \operatorname{op2}(c \operatorname{op3} d))\operatorname{op4}e $ where each of $a, \;b,\;c,\;d,\;e$ can be one the Boolean variables $p,\;q,\;\neg p,\;\neg q$ and each of $\operatorname{op1},\;\operatorname{op2},\;\operatorname{op3},\;\operatorname{op4}$ one of $\lor,\;\land,\;\to$.
For example: $((q \lor \neg p) \to (p \land \neg q)) \lor \neg q$

Question in Marie's linear algebra workspace
Putting a pair of linear equations into matrix notation and then solving by finding the inverse of the coefficient matrix.

Question in Marie's linear algebra workspace
Linear combinations of $2 \times 2$ matrices. Three examples.

Question in Marie's linear algebra workspace
Multiplication of $2 \times 2$ matrices.

Question in Marie's linear algebra workspace
Find the determinant and inverse of three $2 \times 2$ invertible matrices.

Question in Marie's linear algebra workspace
Choose which of 5 matrices are in a) row echelon form but not reduced b) reduced row echelon form c) neither.

Question in Marie's Logic workspace
Match the equivalence with the rule

Question in Marie's Logic workspace
Match the equivalence with the rule

Question in Marie's Logic workspace
Asks to determine whether or not 6 statements are propositions or not i.e. we can determine a truth value or not.

Exam (6 questions) in Marie's Logic workspace
One question on determining whether statements are propositions.
Four questions about truth tables for various logical expressions.

Question in Marie's recurrence relations workspace
No description given

Question in Marie's recurrence relations workspace
No description given

Question in Marie's workspace
Asks to determine whether or not 6 statements are propositions or not i.e. we can determine a truth value or not.

Question in Marie's linear algebra workspace
Solving a system of three linear equations in 3 unknowns using Gauss Elimination in 4 stages. Solutions are all integral.

Question in Marie's linear algebra workspace
Multiplication of $2 \times 2$ matrices.

Question in Marie's linear algebra workspace
Adding and subtracting two 3x3 matrices.

Question in Marie's linear algebra workspace
Addition, subtraction and multiplication of 2 x 2 matrices and multiplication by a scalar.
(Last three parts of original question removed.)

Exam (5 questions) in Marie's linear algebra workspace
Quiz to assess matrix addition, subtraction, multiplication and multiplication by scalar, determinants and inverses, solving a system of simultaneous equations.

Question in Marie's linear algebra workspace
Find the determinant and inverse of three $2 \times 2$ invertible matrices.

Question in Marie's linear algebra workspace
Elementary Exercises in multiplying matrices.

Question in Marie's linear algebra workspace
Add three vectors by determining their scalar components and summing them.

Question in Marie's linear algebra workspace
Linear combinations of $2 \times 2$ matrices. Three examples.

Question in Marie's linear algebra workspace
Find the determinant and inverse of three $2 \times 2$ invertible matrices.

Question in Marie's linear algebra workspace
Multiplication of $2 \times 2$ matrices.

Question in Marie's linear algebra workspace
aij notation and definition of the order of a matrix.

Exam (7 questions) in Marie's linear algebra workspace
Matrix addition, multiplication. Finding inverse. Determinants. Systems of equations.
rebelmaths

Question in Marie's linear algebra workspace
Linear combinations of $2$ dimensional vectors.

Question in Marie's linear algebra workspace
Linear combinations of $2 \times 2$ matrices. Three examples.

Question in Marie's Logic workspace
Demonstrates how to create variables containing LaTeX commands, and how to use them in the question text.

Question in Marie's Logic workspace
No description given