​If the degree of the numerator of a rational function is one greater than the degree of the denominator, the graph has an oblique(slanted)asymptote. We find an equation for the asymptote by dividing numerator by denominator to express f as a linear function plus a remainder that goes to zero as Chapter 2 :Limits and Continuity_总结. Here is an example.

Chapter 2 :Limits and Continuity_错题_02


The function f(x) = x is called the identity function.

All composites of continuous functions are continuous.


The rules of exponents tell us that Chapter 2 :Limits and Continuity_微积分_03 if a is any number different from zero. They also tell us that Chapter 2 :Limits and Continuity_总结_04 if n is any positive number.

Chapter 2 :Limits and Continuity_高数_05 .


max { a, b } = (a+b)/2 + |a+b|/2

min { a, b } = (a+b)/2 - |a+b|/2


Chapter 2 :Limits and Continuity_总结_06

Answer:

Chapter 2 :Limits and Continuity_总结_07

Chapter 2 :Limits and Continuity_高数_08


Chapter 2 :Limits and Continuity_高数_09

Answer:

Chapter 2 :Limits and Continuity_高数_10


Chapter 2 :Limits and Continuity_高数_11

Answer:

Chapter 2 :Limits and Continuity_数学_12


At what points are the following functions continuous?

1. Chapter 2 :Limits and Continuity_错题_13

2. Chapter 2 :Limits and Continuity_错题_14 3. Chapter 2 :Limits and Continuity_数学_15

Answer:

  1. Chapter 2 :Limits and Continuity_微积分_16 (k is any integer)

  2. Chapter 2 :Limits and Continuity_数学_17

  3. Chapter 2 :Limits and Continuity_数学_18


     

    Lorentz contraction

    In relativity theory, the length of an object, say a rocket, appears to an observer to depend on the speed at which the object is traveling with respect to the observer. If the observer measures the rocket's length as at rest, then at speed Chapter 2 :Limits and Continuity_高数_19 the length will appear to be

    Chapter 2 :Limits and Continuity_错题_20 .

    This equation is the Lorentz contraction formula. Here, c is the speed of light in a vacuum.


Chapter 2 :Limits and Continuity_微积分_21

Answer:

Chapter 2 :Limits and Continuity_总结_22Chapter 2 :Limits and Continuity_错题_23


Graph the following curves, where do the graph appear to have vertical tangents? Confirm your findings with limit calculations.

Chapter 2 :Limits and Continuity_总结_24     Chapter 2 :Limits and Continuity_高数_25   Chapter 2 :Limits and Continuity_错题_26          Chapter 2 :Limits and Continuity_错题_27           Chapter 2 :Limits and Continuity_错题_28

Answer:

Chapter 2 :Limits and Continuity_高数_29Chapter 2 :Limits and Continuity_总结_30Chapter 2 :Limits and Continuity_总结_30

Chapter 2 :Limits and Continuity_微积分_32

Chapter 2 :Limits and Continuity_高数_33

Chapter 2 :Limits and Continuity_总结_34

Chapter 2 :Limits and Continuity_错题_35


On what intervals are the following functions continuous?

Chapter 2 :Limits and Continuity_总结_36    Chapter 2 :Limits and Continuity_高数_37

Answer:

Chapter 2 :Limits and Continuity_微积分_38     Chapter 2 :Limits and Continuity_高数_39


Chapter 2 :Limits and Continuity_微积分_40

Chapter 2 :Limits and Continuity_总结_41