Assignment
University
Rice UniversityCourse
Preparing for the AP Calculus AB ExamPages
1
Academic year
2022
FredCy
Views
12
p {margin: 0; padding: 0;} .ft00{font-size:20px;font-family:Arial;color:#000000;} .ft01{font-size:16px;font-family:ArialMT;color:#000000;} .ft02{font-size:16px;line-height:21px;font-family:ArialMT;color:#000000;} Finding Limits Analytically. Example Problem 1 We can find the limit of an algebraic expression in several ways. One way is to use simplesubstitution, but that doesn't work for indeterminate forms; evaluating numerator anddenominator with negative 4 will yield 0/0.To clear up the 0/0, we need to factor.The top factors of 4x – 10 are 4x + 2 and 4x – 2. The denominator factors of 4x – 10 are 4x +2 and 4x. Both the numerator and denominator have a factor of 4x + 2, so if you add thesetwo equations together, you will get a true statement.Thus, as x approaches negative 4, we have the derivative of x minus 10 divided by x plus 2.Because the numerator and denominator both equal 1, we eliminate the problem of divisionby 0.We have taken the expression 0/0 out of the limit. Therefore, we are left with only thenumerator and denominator as fractions to simplify. To evaluate the limit again, plug innegative 4. We will evaluate it in the same way we evaluated it earlier by dividing thenumerator and denominator by 2. By doing so, we get −14/2, which is −7. The limit is −7.
Example Problem 1. Finding Limits Analytically
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