Math Problem Statement
W1. lim
xS2
2x
2
-11x +14
x
2
-5x +6
Solution
It seems you're asking to find the limit of the following rational function as :
Let's break it down and solve step by step:
Step 1: Factorize the numerator and denominator
-
Numerator: The numerator is . Let's factorize it:
- Multiply the leading coefficient (2) by the constant (14) to get .
- We need two numbers that multiply to 28 and add to -11. These numbers are -7 and -4.
So, the factorization of the numerator is:
-
Denominator: The denominator is . Factorizing this quadratic:
- We need two numbers that multiply to 6 and add to -5. These numbers are -3 and -2.
So, the factorization of the denominator is:
Step 2: Simplify the expression
Now that we have the factored form of both the numerator and denominator, the expression becomes:
Cancel out the common factor from the numerator and denominator:
Step 3: Substitute into the simplified expression
Now, substitute into the simplified expression:
Final Answer:
Let me know if you would like more details or have any questions!
Here are 5 related questions you could explore:
- How do you find limits when direct substitution results in an indeterminate form?
- What is the difference between removable and non-removable discontinuities in a function?
- Can you factor a higher-degree polynomial in a similar way?
- How does the behavior of a function near a limit differ from its behavior at the limit?
- What techniques can be used if a rational function can't be factored easily?
Tip: Always check if a limit leads to an indeterminate form, like , before applying algebraic simplifications.
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Math Problem Analysis
Mathematical Concepts
Limits
Algebra
Factoring Quadratics
Rational Functions
Formulas
Limit of a rational function as x approaches a value
Factoring quadratic equations: ax^2 + bx + c
Theorems
Limit Laws
Factoring Quadratic Theorem
Suitable Grade Level
Grades 10-12
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