1. explain under what conditions the product ab of two matrices a and b is defined. 2. explain under what conditions the sum a + b of two matrices a and b is defined. 3. what does it mean for a matrix to be non-zero? 4. what matrix does the notation in represent? explain in words, then construct i3. 5. if a matrix a is 3 × 5 and the product ba is 2 × 5, then what is the siz

is means division by fractions

step-by-step explanation:

see attached

step-by-step explanation:

given the function as;

write the equation replacing f(x) with y

form   and fill a table containing values of y with corresponding values of x

you can take a range for   values of x as -3≤x≤3

solving for x=-3

for x=-2

repeat the same procedure to get the values of y for the remaining ,x=-1 to x=3

plot the values of y against values   of x and obtain the following graph

pi x^2

step-by-step explanation:

pi times x squared

its the second choice.

step-by-step explanation:

the elements in the range will be 7 less than the elements in the domain.