1.5 LIMITS Calculus 9/16/14
Jan 01, 2016
1.5 LIMITSCalculus 9/16/14
WARM-UP
• 1. What is the domain and range:
2. Evaluate the expression and simplify ,
LIMITS – P. 49
GOAL
•Find limits graphically or numerically•Use properties of limits and analytic techniques to evaluate limits of a function
DEFINITION
•Limit of a Function – If becomes arbitrarily close to a single number as approaches from either side, then
“the limit of as approaches c is ”
FINDING A LIMIT•Direct Substitution:
•
EX. 1
•
a) c) graph
b) Table
EXAMPLE 2.•
•
• table
•Graph
EXAMPLE 3
• table
•Graph
EX. 3
• Graph
FIND THE LIMIT
lim𝑥→ 1
𝑥3+4 𝑥−5𝑥−1
PROPERTIES –P.51
OPERATIONS
EX 6- FIND THE LIMIT
lim𝑥→ 2
𝑥2+2 𝑥−3
WARM-UP•Graph
•What does the graph look like and why?
•When does a limit not exist?
LIMTS•Limits are useful when we need to find the value of a function getting close to a certain “x” value•We can use direct substitution (“plug in” the x to find the value at that point), but sometimes that is not possible and limits help us see what the function value could be as we approach that x value
FIND THE LIMIT
•
FIND THE LIMIT
lim𝑥→ 1
𝑥3−1𝑥−1
ONE- SIDED LIMITS
•
lim𝑥→ 0+¿|2 𝑥|
𝑥¿
¿
DOES THE LIMIT EXIST OR NOT?
FIND A ONE-SIDED LIMIT
• Find the limit of f(x) as x approaches 1
UNBOUNDED BEHAVIOR
lim𝑥→ 2
3𝑥−2
COMPARING ONE SIDED LIMITS
•Ex. 9 in the book.