Back to AI Flashcard MakerMathematics /AP Calculus AB: 12.1.1 Indeterminate Forms

AP Calculus AB: 12.1.1 Indeterminate Forms

Mathematics14 CardsCreated 3 months ago

This content focuses on identifying and resolving indeterminate forms like 0/0 and ∞/∞ when evaluating limits. It explains algebraic strategies such as factoring and dividing by the highest power to simplify expressions and determine meaningful limit values.

Indeterminate Forms

  • A limit of a function is called an indeterminate form when it produces a mathematically meaningless expression. Two types of indeterminate forms are 0/0 and ∞/∞.

  • Some indeterminate forms can be solved by using algebraic tricks such as canceling or dividing by the highest power of x.

Tap or swipe ↕ to flip
Swipe ←→Navigate
1/14

Key Terms

Term
Definition

Indeterminate Forms

  • A limit of a function is called an indeterminate form when it produces a mathematically meaningless expression. Two types of indeterminate ...

note

  • When taking limits, sometimes you will encounter expressions whose meanings can be interpreted in different ways. These limits are called i...

Evaluate limx→∞ 4x5+10x3+9x2+2x+12x5−3x4−9x+5

2

Evaluate limx→3 x3−27x2−2x−3.

27/4

Evaluate limx→∞ 8x8−x5+x2+11−2x8

-4

Evaluate limx→100100x−x2x3−100x2.

-1/100

Related Flashcard Decks

Study Tips

  • Press F to enter focus mode for distraction-free studying
  • Review cards regularly to improve retention
  • Try to recall the answer before flipping the card
  • Share this deck with friends to study together
TermDefinition

Indeterminate Forms

  • A limit of a function is called an indeterminate form when it produces a mathematically meaningless expression. Two types of indeterminate forms are 0/0 and ∞/∞.

  • Some indeterminate forms can be solved by using algebraic tricks such as canceling or dividing by the highest power of x.

note

  • When taking limits, sometimes you will encounter expressions whose meanings can be interpreted in different ways. These limits are called indeterminate forms. 0/0 is one example.

  • One camp says that the indeterminate form equals one because it is a number divided by itself.

  • Another says that zero divided by anything is zero.

  • A third says that any number divided by zero is infinity.

  • Similar arguments hold for the form.

  • When an indeterminate form arises, you will have to do more work.

  • One algebraic trick involves factoring the numerator and the denominator.

  • In this case, you can cancel the (x – 3) factors as long as you promise not to let x be equal to three.

  • To evaluate this limit, look for the highest power.

  • In this case, x 3 is the highest power, so divide the numerator and denominator by it. You are essentially multiplying by a form of one.

  • Now all the terms have x in the denominator except one. Those terms will approach zero.

  • The result is not an indeterminate form. It is negative infinity

Evaluate limx→∞ 4x5+10x3+9x2+2x+12x5−3x4−9x+5

2

Evaluate limx→3 x3−27x2−2x−3.

27/4

Evaluate limx→∞ 8x8−x5+x2+11−2x8

-4

Evaluate limx→100100x−x2x3−100x2.

-1/100

Evaluate limx→2 x3−4x3x−6.

8/3

Evaluate limx→1 x12−2x11+x10x3−x2−x+1

1/2

Evaluate limx→∞ 2x3−33x3−4x2+1.

2/3

Evaluate limx→3 2x−6x2−4x+3.

1

Evaluate limx→∞ 2x2000−5x+4002x2001+2001

0

Evaluate limx→2 x3−2x210x−20

2/5

Evaluate limx→0 x3−3x211x5−4x2.

3/4

Evaluate limx→1 x2+2x−3x−1

4