Complete the multiplication: 2ea

a. [14 −4]
b. [7 −4]
c. [14 4]
d. [7 −2]

In mathematics, a matrix (plural matrices) is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.

Given that

E = [ 1 2]

A = | 3  0|

      | 2 -1 |

2EA = 2 [1 2] | 3  0|

                      | 2 -1 |

2EA = [ 14  -4]

explanation:

infrared radiation has wavelength in the range between 700 nm and 1 mm. lets' convert these values into scientific notation, keeping in mind that:

let's start from the lower value, we have:

(we moved the dot two places to the left, so we increased the exponent by 2 units, from -9 to -7)

the higher value is:

so, the range of wavelength of infrared radiation is: