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a rational express ion undefined when the denominator is 0 because we cannot dvide by 0. For example, 9/x is undefine when x is 0 because we would be dividing by 0. Similarly 2/(7-x) is undefined for x=7 because we once again have a zero in the denominator.
To find where a rational expression is undefined, set the denominator equal to 0
so if we have p/q where q is any number or expression, set and solve q=0
From, Doctor Huge Dick
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∙ 11y ago
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A rational expression is undefined whenever its numerator is zero?
false
For what value of x is the rational expression below undefined?
6
A rational expression is undefined whenever its denominator is zero?
False
What value of x makes the expression x undefined?
+1/0 or -1/0 or 0/0
What is a rational algebraic expression?
A rational number is any number that can be written in the form a/b, where a and b are integers and b ≠0. it is necessary to exclude 0 because the fraction represents a ÷ b, and division by zero is undefined.A rational expression is an expression that can be written in the form P/Q where P and Q are polynomials and the value of Q is not zero.Some examples of rational expressions:-5/3; (x^2 + 1)/2; 7/(y -1); (ab)/c; [(a^2)(b]/c^2; (z^2 + 3z + 2)/ (z + 1) ect.Like a rational number, a rational expression represents a division, and so the denominator cannot be 0. A rational expression is undefined for any value of the variable that makes the denominator equal to 0. So we say that the domain for a rational expression is all real numbers except those that make the denominator equal to 0.Examples:1) x/2Since the denominator is 2, which is a constant, the expression is defined for all real number values of x.2) 2/xSince the denominator x is a variable, the expression is undefined when x = 03) 2/(x - 1)x - 1 ≠0x ≠1The domain is {x| x ≠1}. Or you can say:The expression is undefined when x = 1.4) 2/(x^2 + 1)Since the denominator never will equal to 0, the domain is all real number values of x.
When is a racional expression undefined?
a rational expression is undefined when the denominator is 0 because we cannot dvide by 0.
How do you determine the values for which a rational expression is undefined?
A rational expression is not defined whenever the denominator of the expression equals zero. These will be the roots or zeros of the denominator.
A rational expression is undefined whenever its numerator is zero?
false
For what value of x is the rational expression below undefined?
6
A rational expression is undefined whenever its denominator is zero-?
True
What happens if you are checking a solution for the rational expression and find that it makes one of the denomiators equal to zero?
If one of the denominators becomes equal to zero when checking a solution for a rational expression, it means that the expression is undefined at that point. This is because division by zero is not defined in mathematics. Therefore, the solution you found is not valid for that rational expression.
A rational expression is undefined whenever its denominator is zero?
False
Is a rational expression undefined whenever its number is zero?
No. 0/3 is well defined.
Is it true that a rational expression is undefined whenever it's denominator is zero?
Yes, it is true.
Are the any values for x for which each rational expression is undefined xoverx plus 8?
The expression X/(X+8) is undefined at X=-8, because that would be division by zero.
How do you write a rational expression that is undefined when x equals 4 and x equals 0?
One possible expression is [ 1/(x - 4)+ 1/x ].
When is rational expression undefine or meaningless?
A rational number is any number that can be expressed as a fraction. It becomes meaningless or undefined when the lower number, the denominator, its 0 (zero)
