SIM1004 - MATLAB

Which one is an invalid variable?

• breaks

• break_

• break

• Break

Which of the following command lists the current variable in Matlab?

• variable

• list

• who

• type

.......... is not a pre-defined variable in Matlab.

• i

• inf

• NaN

• gravity

MATLAB format ___________ display a numeric output with fifteen significant numbers after the decimal point.

Inf is a pre-defined constant that represents the result of a meaningless mathematical function, such as the division of 0 by 0?

• True

• False

Find the transpose of this array A = [2, 10, 5; 4+i, 9i, 7].

• >> trans(A)

• >> A'

• >> A.'

• >> transpose(A)

__________ are treated as arrays with only one row and one column.

What vector is generated by the following statement?

>> x = linspace(0, 1, 5)

• 0, 1, 2, 3, 4

• 1, 2, 3, 4, 5

• 0, 0.2, 0.4, 0.6, 0.8

• 0, 0.25, 0.5, 0.75, 1

• 0, 0.25, 0.5, 1

Choose the suitable function to determine the number of elements in a vector

• length

• numel

• sizes

• round

Function ______ is used to generate a row vector y of n points evenly spaced between a and b.