Estimate the following limits using graphs or tables.


lim x→1 9(√2x − x^4 −3√x) / 1 − x^3/4

Verified step by step guidance

1. Identify the limit expression: $\underset{x\to 1}{lim}\frac{9(\sqrt{2x}-x^4-3\sqrt{x})}{1-x^{3/4}}$.
2. Recognize that direct substitution of $x=1$ results in an indeterminate form $\frac{0}{0}$.
3. Consider using a table of values to estimate the limit by choosing values of $x$ that approach 1 from both the left and the right.
4. Alternatively, graph the function $f(x)=\frac{9(\sqrt{2x}-x^4-3\sqrt{x})}{1-x^{3/4}}$ and observe the behavior as $x$ approaches 1.
5. Analyze the behavior of the numerator and the denominator separately as $x\to 1$ to understand the limit's behavior.

Key Concepts

Limits

A limit is a fundamental concept in calculus that describes the behavior of a function as its input approaches a certain value. It helps in understanding how functions behave near points of interest, including points where they may not be defined. Evaluating limits can involve direct substitution, factoring, or using special techniques like L'Hôpital's rule when dealing with indeterminate forms.

Continuity

Continuity refers to a property of functions where they do not have any abrupt changes, jumps, or holes at a given point. A function is continuous at a point if the limit as the input approaches that point equals the function's value at that point. Understanding continuity is essential for evaluating limits, as discontinuities can lead to undefined or infinite limits.

Graphical Analysis

Graphical analysis involves using the visual representation of a function to estimate limits and understand its behavior. By plotting the function, one can observe trends, identify asymptotes, and determine the value the function approaches as the input nears a specific point. This method is particularly useful for complex functions where algebraic manipulation may be challenging.