Q. Find limx→∞2x4−x3−45x4+x2.Choose 1 answer:(A) 25(B) 0(C) −41(D) The limit is unbounded
Divide by x4: To find the limit of the given function as x approaches infinity, we can divide each term in the numerator and the denominator by the highest power of x present in the denominator, which is x4.
Simplify numerator: Divide each term in the numerator by x4: (5x4/x4)+(x2/x4)=5+(1/x2)
Simplify denominator: Divide each term in the denominator by x4:(x42x4)−(x4x3)−(x44)=2−(x1)−(x44)
Rewrite limit expression: Now, we rewrite the original limit expression with the simplified terms: limx→∞2−x1−x445+x21
Approach infinity: As x approaches infinity, the terms with x in the denominator approach zero. Therefore, x21, x1, and x44 all approach zero.
Simplify further: The limit expression simplifies to: limx→∞(5+0)/(2−0−0)=25
Final result: The limit of the function as x approaches infinity is 25, which corresponds to answer choice (A).