Learn about sequences and series. Explore summation and how to use summation notation. Understand how to write a series in summation notation with...
Use interval notation to express the range of numbers making your inequality a true statement. The solution set describing all numbers between -2 and 3 is expressed as: (-2,3). For the inequality x + 2 < 4, the solution set includes all numbers less than 2. So your solution ranges fr...
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5. Closed and open intervals and inequalities Interval notation — including closed and open intervals — is a way to note the range of values that makes an inequality true. Therefore, every interval can be written as an inequality (and vice versa). If an inequality has the less than < or...
Limit notation is just used as shorthand. Instead of saying“the limit at x = 5 approaches 9 for the function f(x) = x + 4”, you would write: Where the arrow just means “approaches.” The general way of writing the notation, without reference to any specific function, is: What th...
In math, we like to write exponents with a positive number. So what happens if I get a negative exponent? What about a zero exponent? Before we get started, I need to tell you something important here: x^-a does not mean -x^a. The negative exponent has nothing to do with positive...
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Interval notation is a simplified form of writing the solution to an inequality or system of inequalities, using the bracket and parenthesis symbols in lieu of the inequality symbols. Intervals with parentheses are called open intervals, meaning the vari
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