One important distinguishing feature of valid arguments is that if the premises are true then the conclusion must be false if the conclusion is false, then one or more of the premises must also have been false they are shorter than invalid arguments they reveal new and important information about natural phenomena

If the conclusion is false, then one or more of the premises must also have been false.

Step-by-step explanation:

One important distinguishing feature of valid arguments is that - if the conclusion is false, then one or more of the premises must also have been false.

An argument form is said to be valid, if and only if, when all premises are true, then the conclusion is true.

answer:

it is general formula that is used to write value to its excet position

a11 a12 a13

a21 a22 a23

it is the example of order 2 by 3 matrix in this

a11 means value occur in 1 st row 1st column

a12 means value occurs in 1st row 2nd column

a13 means value occur in 1st row and 3rd column

a21 means value occurs in 2nd row and 1st column

a22 means value occurs in 2nd row and in 2nd column

a23 means value occurs in 2nd row and in 3rd column

answer4 to the second power is 16

and 4 to the third power is 64,