Q. Find limx→∞x+4x2−4.Choose 1 answer:(A) 1(B) −1(C) 0(D) The limit is unbounded
Observing the highest power: To find the limit of the given function as x approaches infinity, we can use the properties of limits and the behavior of polynomials.x→∞limx+4x2−4We observe that the highest power of x in both the numerator and the denominator is x2. To simplify, we can divide both the numerator and the denominator by x2, the highest power of x present in the expression.
Dividing numerator and denominator: Divide the numerator and the denominator by x2: x→∞lim(−x2/x2x24)/(x2x+x24)Simplify the expression:x→∞lim(1/x+4/x21−4/x2)
Evaluating the limit of each term: As x approaches infinity, the terms with x in the denominator will approach zero. Therefore, we can evaluate the limit of each term individually:limx→∞(1)=1limx→∞(−x24)=0limx→∞(x1)=0limx→∞(x24)=0Now we can rewrite the limit as:limx→∞(0+01−0)
Simplifying the expression: The expression simplifies to: limx→∞(01) Since there are no terms with x in the denominator left, the limit simplifies to 1.
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