There could be a variable in the numerator which is not defined. For example, [tan(x)]/3 has no variable in the denominator but the expression is not defined for x = pi/2, for example (90 deg).
To find the value of the other variable
The variable that depens on a number or anther variable to find it's value.
It is called the independent variable. For example if you are trying to find y: y = x+1 X is the independent variable, and Y is the dependent variable. The value of Y, depends on the value of X.
Two steps.1) Replace any variable by its value. 2) Do the indicated calculations.
A number, multiplied by a variable is part of an Algebraic equation. A person can find out the value of the variable if they divide each side by the number that is next to the variable. For example, if the equation is 5x = 60, divide each side by 5 and the answer is x = 12.
you put the fraction in simplest form (the numerator and denominator have no common factors besides one) then you find what number your variable should be to make the denominator 0. this is excluded value b/c your denominator can never equal 0 the number you found is your excluded value ex. 4 ------ Your excluded value is 3 because 3(3-3)=0 x(x-3)
Substitute the variable in the denominator for a value that will make the denominator have a value of 0 or an imaginary number
To find excluded values in a mathematical expression, especially in rational functions, identify values that make the denominator zero, as these values are undefined. Set the denominator equal to zero and solve for the variable to determine these excluded values. Additionally, for other types of functions, like square roots, identify values that lead to negative results under the square root. Always remember to consider the context of the problem to ensure all excluded values are accounted for.
Denominator = Numerator/Value
you are finding values to be excluded from the domain.
To solve rational expressions, first, factor both the numerator and the denominator whenever possible. Next, identify any common factors that can be canceled out to simplify the expression. If the expression includes an equation, set the simplified form equal to zero to find the variable's value, and ensure to check for any excluded values that make the denominator zero. Finally, express the solution in its simplest form.
the figures are similar. Find the value of each variable. solve
To find the value of the other variable
The answer will depend on what aspect is the variable.
Use factorials.
Take the value of each variable in the expression and replace the variable by its value. Then do the math!
The variable that depens on a number or anther variable to find it's value.