Question:
Find the limit algebraically:
x→∞lim4x3−x+52x3+3x2−xStep-by-step Solution:
To find the limit of the given expression as x approaches infinity, we can simplify the expression by dividing every term by the highest power of x in the denominator.
Divide each term in the numerator and denominator by x3:
x→∞limx34x3−x3x+x35x32x3+x33x2−x3xSimplifying the expression, we get:
x→∞lim4−x21+x352+x3−x21As x approaches infinity, all terms involving x1 and x21 will tend to zero. We can ignore these terms in the numerator and denominator, yielding:
x→∞lim42Simplifying further, we have:
x→∞lim21Thus, the limit of the given expression as x approaches infinity is 21.