No, because the reverse statement may not result in a true statement.
(A) If x is an integer then x*x is rational.
(B) if x*x is rational then x is an integer.
(B) is utter nonsense. x can be any rational number of even a square root of a rational number, for example, sqrt(2/3), and x*x will be rational.
false
False
No, not always. It depends on if the original biconditional statement is true. For example take the following biconditional statement:x = 3 if and only if x2 = 9.From this biconditional statement we can extract two conditional statements (hence why it is called a bicondional statement):The Conditional Statement: If x = 3 then x2 = 9.This statement is true. However, the second statement we can extract is called the converse.The Converse: If x2=9 then x = 3.This statement is false, because x could also equal -3. Since this is false, it makes the entire original biconditional statement false.All it takes to prove that a statement is false is one counterexample.
The statement is bi-conditional. The "if and only if" should have tipped you off immediately.
If lines lie in two planes, then the lines are coplanar.
The conjunction of a conditional statement and its converse is known as a biconditional statement. It states that the original statement and its converse are both true.
It is the biconditional.
A biconditional is the conjunction of a conditional statement and its converse.
false
False
a condtional statement may be true or false but only in one direction a biconditional statement is true in both directions
No, not always. It depends on if the original biconditional statement is true. For example take the following biconditional statement:x = 3 if and only if x2 = 9.From this biconditional statement we can extract two conditional statements (hence why it is called a bicondional statement):The Conditional Statement: If x = 3 then x2 = 9.This statement is true. However, the second statement we can extract is called the converse.The Converse: If x2=9 then x = 3.This statement is false, because x could also equal -3. Since this is false, it makes the entire original biconditional statement false.All it takes to prove that a statement is false is one counterexample.
If a number is nonzero, then the number is positive.
The statement is bi-conditional. The "if and only if" should have tipped you off immediately.
If lines lie in two planes, then the lines are coplanar.
What is negation of biconditional statement?
Definition