Q. Find limx→∞x4+3x5x3+2x2−7.Choose 1 answer:(A) 0(B) 5(C) 43(D) The limit is unbounded
Analyze Behavior: To find the limit of the given function as x approaches infinity, we need to analyze the behavior of the numerator and the denominator separately. We look for the highest power of x in both the numerator and the denominator to determine the leading terms.
Highest Power Analysis: The highest power of x in the numerator is x3, and the highest power of x in the denominator is x4. As x approaches infinity, the terms with lower powers of x become insignificant compared to the leading terms. Therefore, we can focus on the leading terms to determine the limit.
Focus on Leading Terms: The leading term in the numerator is 5x3, and the leading term in the denominator is x4. As x approaches infinity, the ratio of these two terms will determine the limit. The ratio is x45x3, which simplifies to x5.
Determine Ratio: As x approaches infinity, the term x5 approaches 0 because the denominator grows much faster than the numerator. Therefore, the limit of the entire expression as x approaches infinity is 0.
Limit Calculation: Comparing our result with the given options, we find that the correct answer is (A)0.
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