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Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Jan 01, 2016

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Letitia Walker
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Page 1: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Limits

Page 2: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

a limit is the value that a function or sequence "approaches" as the input approaches some value.

Page 3: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

• Fill in the blank….

You can always make a ___________ turn on red unless a sign is posted prohibiting it.

Page 4: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Give me liberty or ___________ me death!

Page 5: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Don’t cry over spilled ____________ .

Page 6: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Limit – The most logical y-value for a given x-value.  Example: look at the table of values to help us determine lim f(x) as x approaches 2. 

f(x) = x f(x)

0 3

1 3

2 Undefined

3 3

4 3

Page 7: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.
Page 8: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Let the graph below represent the function f(x)

Page 9: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.
Page 10: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.
Page 11: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Two important ideas about limits:• The limit of a function at a point is the logical y-value at that point.

• We do not care what the value of a function actually is at the point where we’re looking for the limit.

Page 12: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.
Page 13: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

When g(x) = x + 1 and g(x) = 

1lim ( )xg x

Find the 

Page 14: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Find 

Page 15: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Try on your own by sketching a graph

Find1) 2)

3)

Page 16: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.
Page 17: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.
Page 18: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.
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Page 20: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Three types of discontinuity

Removable discontinuity – When the graph is continuous except for a hole.  Jump discontinuity – When the left and right side limits are different.  Infinite discontinuity – Created by vertical asymptotes. 

Page 21: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Limits and Infinity

Cheat code: Divide each term by x of the highest degree in the function. 

Page 22: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Horizontal Asymptotes; Let f(x) = • The graph f(x) has, at most, one horizontal asymptote. – If the degree of the numerator (p(x)) is less than the degree of the denominator (q(x)), then the line y = 0 (the x-axis) is a horizontal asymptote. 

– If the degree of p(x) is equal to the degree of q(x), then the line y = a/b, where a is the leading coefficient of p(x) an b is the leading coefficient of q(x).

– If the degree of p(x) > degree of q(x), then there are no horizontal asymptotes. 

Page 23: Limits. a limit is the value that a function or sequence "approaches" as the input approaches some value.

Limits Practice with solutions

• http://archives.math.utk.edu/visual.calculus/1/limits.15/

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