Q. Let f(x)=3x+26x3.Find limx→∞f(x).Choose 1 answer:(A) 2(B) 3(C) 0D The limit is unbounded
Analyze degrees of polynomials: To find the limit of the function f(x) as x approaches infinity, we can analyze the degrees of the polynomials in the numerator and the denominator.f(x)=3x+26x3The degree of the polynomial in the numerator is 3 (since the highest power of x is x3), and the degree of the polynomial in the denominator is 1 (since the highest power of x is x).
Comparison of degrees: When the degree of the polynomial in the numerator is higher than the degree of the polynomial in the denominator, as x approaches infinity, the function will also approach infinity.This is because the x3 term in the numerator will grow much faster than the 3x term in the denominator as x becomes very large.
Limit as x approaches infinity: Therefore, the limit of f(x) as x approaches infinity is unbounded.limx→∞f(x)=∞
More problems from Is (x, y) a solution to the system of equations?