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Updated: 10 March 2020 11:47:00 PM

# When is a limit undefined?

Lesson Summary Some limits in calculus are undefined because the function doesn't approach a finite value. The following limits are undefined: One-sided limits are when the function is a different value when approached from the left and the right sides of the function.

## In this regard, how do you know when a function is undefined?

A rational expression is undefined when the denominator is equal to zero. To find the values that make a rational expression undefined, set the denominator equal to zero and solve the resulting equation. Example: 0 7 2 3 x x − Is undefined because the zero is in the denominator.

## Keeping this in mind when can a limit not exist?

Limits typically fail to exist for one of four reasons: The one-sided limits are not equal. The function doesn't approach a finite value (see Basic Definition of Limit). The function doesn't approach a particular value (oscillation).

## By analogy you ask what does it mean if a number is undefined?

An expression in mathematics which does not have meaning and so which is not assigned an interpretation. For example, division by zero is undefined in the field of real numbers. SEE ALSO: Ambiguous, Complex Infinity, Directed Infinity, Division by Zero, Ill-Defined, Indeterminate, Well-Defined.

#### What happens when an equation is 0 0?

2 Answers. If you end with 0=0 , then it means that the left-hand side and the right-hand side of the equation are equal to each other regardless of the values of the variables involved; therefore, its solution set is all real numbers for each variable.

#### When a system has no solution?

If a consistent system has an infinite number of solutions, it is dependent . When you graph the equations, both equations represent the same line. If a system has no solution, it is said to be inconsistent . The graphs of the lines do not intersect, so the graphs are parallel and there is no solution.

#### What is an example of a one solution equation?

Linear Equations With one Solution
On solving we have 7x = 35 or x = 5. The above linear equation is only true if x = 5 and hence the given linear equation has only one solution i.e. x = 5. Example 2: Consider the equation 9(x – 1) – 35 = 8x + 37. On solving we have 9x – 9 – 35 = 8x + 37.

#### Is 0 0 infinite or no solution?

For an answer to have an infinite solution, the two equations when you solve will equal 0=0 . Here is a problem that has an infinite number of solutions. If you solve this your answer would be 0=0 this means the problem has an infinite number of solutions.

#### How do you solve an equation with two variables on both sides?

After simplifying, the first step in solving an equation with a variable on both sides is to get the variable on one side. This is done by reversing the addition or subtraction of one of the terms with the variable.

#### Does undefined mean no solution?

An equation can have no solution(s). You do not say that an equation is undefined. Being undefined is not a property an equation can have. For example, the equation x2=−1 has no (real) solutions.

#### What are the 3 methods for solving systems of equations?

There are three ways to solve systems of linear equations: substitution, elimination, and graphing. Let's review the steps for each method.

#### What makes a system have infinitely many solutions?

Conditions for Infinite Solution
The system of an equation has infinitely many solutions when the lines are coincident, and they have the same y-intercept. If the two lines have the same y-intercept and the slope, they are actually in the same exact line.

#### How do you know if there are infinite solutions?

If we end up with the same term on both sides of the equal sign, such as 4 = 4 or 4x = 4x, then we have infinite solutions. If we end up with different numbers on either side of the equal sign, as in 4 = 5, then we have no solutions.

#### How do you know if its a real number?

Combine like terms on both sides of the equation. Isolate the x term by subtracting x from both sides. You arrive at the true statement “3 = 3”. When you end up with a true statement like this, it means that the solution to the equation is “all real numbers”.

#### What makes a system have no solution?

A system has no solution if the equations are inconsistent, they are contradictory. for example 2x+3y=10, 2x+3y=12 has no solution. is the rref form of the matrix for this system. The row of 0's only means that one of the original equations was redundant. The solution set would be exactly the same if it were removed.

#### Does undefined mean zero?

A number divided by zero is just not a real number. "zero divided by zero may be any real number" is an informal way to express that certain indeterminate expressions have a limit. When referring to the result of a mathematical operation, undefined means there is no meaningful result.

#### How many solutions do 2 parallel lines have?

Each shows two lines that make up a system of equations. If the graphs of the equations intersect, then there is one solution that is true for both equations. If the graphs of the equations do not intersect (for example, if they are parallel), then there are no solutions that are true for both equations.

#### Is undefined equal to zero?

There is no number that you can multiply by 0 to get a non-zero number. There is NO solution, so any non-zero number divided by 0 is undefined.

#### How do you tell if an equation has no solution?

The constants are the numbers alone with no variables. If the coefficients are the same on both sides then the sides will not equal, therefore no solutions will occur. Use distributive property on the right side first.

#### What happens when a system of equations cancels out?

If both x and y are going to cancel out, then you have either no solution or infinitely many solutions. If the constant on the right are going to cancel out (same number with opposite signs) then there are infinitely many solutions (same line).

#### Is 0 divided by 5 defined?

There will be 0 objects with each friend since there are no objects to divide equally among 5 friends. That is, Hence, is defined.

#### What is a two solution equation?

A quadratic equation has two solutions. Either two distinct real solutions, one double real solution or two imaginary solutions.

#### What is an example of an equation with no solution?

When a problem has no solution you'll end up with a statement that's false. For example: 0=1 This is false because we know zero can't equal one. Therefore we can conclude that the problem has no solution.

#### How do you know if a system has a unique solution?

If the augmented matrix does not tell us there is no solution and if there is no free variable (i.e. every column other than the right-most column is a pivot column), then the system has a unique solution. For example, if A=[100100] and b=[230], then there is a unique solution to the system Ax=b.

#### How do you know if an equation has two Solution?

The discriminant is the part under the square root in the quadratic formula, b²-4ac. If it is more than 0, the equation has two real solutions. If it's less than 0, there are no solutions. If it's equal to 0, there is one solution.

#### Is 1 0 infinity or undefined?

In mathematics, expressions like 1/0 are undefined. But the limit of the expression 1/x as x tends to zero is infinity. Similarly, expressions like 0/0 are undefined. But the limit of some expressions may take such forms when the variable takes a certain value and these are called indeterminate.

#### What does it mean if two equations have no solution?

No solution would mean that there is no answer to the equation. It is impossible for the equation to be true no matter what value we assign to the variable. Infinite solutions would mean that any value for the variable would make the equation true. Note that we have variables on both sides of the equation.

#### What do you call a problem with no solution?

A set of equations with no solutions is called inconsistent if there is no simultaneous solution for the set.