Mathematics Grade 12 15 min

Find limits using addition, subtraction, and multiplication laws

Find limits using addition, subtraction, and multiplication laws

What you'll learn

  • Count up to 5 objects in a picture accurately.
  • Show adding by combining groups of objects in a picture.
  • Solve addition problems with pictures to find sums up to 5 with 80% accuracy.
  • Identify the total number of objects after adding two groups together in a picture.

Tutorial Preview

1

Introduction & Learning Objectives

Learning Objectives State the Sum, Difference, and Product Laws for limits. Apply the Sum Law to find the limit of a sum of functions. Apply the Difference Law to find the limit of a difference of functions. Apply the Product Law to find the limit of a product of functions. Combine the Sum, Difference, and Product Laws to evaluate limits of polynomial functions. Deconstruct complex limit problems into simpler parts using the limit laws. Verify that individual limits exist as finite numbers before applying the laws. Ever wondered how complex systems are analyzed by breaking them down into simpler parts? 🤔 That's exactly what we're doing with limits today! This tutorial will introduce you to the fundamental laws of limits: the Sum, Difference, and Product Laws. Y...
2

Key Concepts & Vocabulary

TermDefinitionExample LimitThe value that a function `f(x)` approaches as the input `x` approaches some value `c`.The limit of `f(x) = x^2` as `x` approaches 2 is 4, written as `lim_{x->2} x^2 = 4`. Limit LawsA set of rules for evaluating limits of combined functions (sums, differences, products, etc.) by breaking them into simpler limits.The Sum Law allows us to find the limit of `f(x) + g(x)` by adding their individual limits. Existence of a LimitThe condition that for a limit law to apply, the individual limits must exist as finite, real numbers.If `lim_{x->c} f(x) = L` and `lim_{x->c} g(x) = M`, where L and M are real numbers, then their individual limits exist. Polynomial FunctionA function involving only the operations of addition, subtraction, multiplication, and non-negat...
3

Core Formulas

Sum Law for Limits lim_{x->c} [f(x) + g(x)] = lim_{x->c} f(x) + lim_{x->c} g(x) The limit of a sum is the sum of the limits, provided the individual limits of f(x) and g(x) exist. Difference Law for Limits lim_{x->c} [f(x) - g(x)] = lim_{x->c} f(x) - lim_{x->c} g(x) The limit of a difference is the difference of the limits, provided the individual limits of f(x) and g(x) exist. Product Law for Limits lim_{x->c} [f(x) * g(x)] = [lim_{x->c} f(x)] * [lim_{x->c} g(x)] The limit of a product is the product of the limits, provided the individual limits of f(x) and g(x) exist.

4 more steps in this tutorial

Sign up free to access the complete tutorial with worked examples and practice.

Sign Up Free to Continue

Sample Practice Questions

Challenging
Given lim_{x->a} f(x) = 4 and lim_{x->a} [f(x) * g(x)] = -12. Find lim_{x->a} [2f(x) - 3g(x)].
A.17
B.-1
C.20
D.Cannot be determined
Challenging
If lim_{x->c} [f(x) * (x-c)] = 0, what can be definitively concluded about lim_{x->c} f(x)?
A.lim_{x->c} f(x) must be 0.
B.lim_{x->c} f(x) must be a finite number, but not necessarily 0.
C.lim_{x->c} f(x) must not exist.
D.lim_{x->c} f(x) could be any finite number, or it could not exist (e.g., be infinite).
Challenging
Evaluate the limit: lim_{x->-1} [(x^4 - 3x^3 + 2x - 5) * (x^2 + x)]
A.-5
B.0
C.Does not exist
D.1

Want to practice and check your answers?

Sign up to access all questions with instant feedback, explanations, and progress tracking.

Start Practicing Free

More from Calculate limits

Mathematics for other grades

Frequently asked questions

What grade level is "Find limits using addition, subtraction, and multiplication laws"?

Find limits using addition, subtraction, and multiplication laws is a Grade 12 Mathematics lesson on ExcelOS.

What will I learn in Find limits using addition, subtraction, and multiplication laws?

You'll be able to: Count up to 5 objects in a picture accurately; Show adding by combining groups of objects in a picture; Solve addition problems with pictures to find sums up to 5 with 80% accuracy.

Is "Find limits using addition, subtraction, and multiplication laws" free to practice?

Yes. You can read the tutorial preview for free, and signing up for a free ExcelOS account unlocks the full tutorial and all practice questions with instant feedback.

How many practice questions are included with Find limits using addition, subtraction, and multiplication laws?

This lesson includes 25 practice questions across multiple difficulty levels, each with instant feedback and explanations.

Ready to find your learning gaps?

Take a free diagnostic test and get a personalized learning plan in minutes.