Answer:
At x= 4 the given expression is undefined.
Step-by-step explanation:
In a given function , if the denominator becomes zero then the function is undefined.
Here, denominator is x-4 so at x = 4 it will become zero. So we can say that at x=4 , the function is undefined
Answer:
The statement
is a contingency.
The statement
is a contradiction.
Step-by-step explanation:
A tautology is a proposition that is always true.
A contradiction is a proposition that is always false.
A contingency is a proposition that is neither a tautology nor a contradiction.
a) To classify the statement
, you need to use the logic laws as follows:

by the logical equivalence involving conditional statement.
by the Commutative law.
by Distributive law.
by the Commutative law.
by the Negation law.
Therefore the statement
is a contingency.
b) To classify the statement
, you need to use the logic laws as follows:

by the logical equivalence involving conditional statement.
by the Commutative law.
by Distributive law.
by the Negation law.
Therefore the statement
is a contradiction.
Answer:
4/5/6= 6/4/5
Step-by-step explanation:
because that i have like with the mose cocative invous
Answer: 0.713709862 rad
Step-by-step explanation: