Identify Function & Point: Identify the function and the point at which we need to find the limit.We are given the function (x4+3x3−10x2)/(x2−2x) and we need to find the limit as x approaches 2.
Direct Substitution: Try direct substitution of x=2 into the function to see if the limit can be found this way.Substitute x=2 into the function:((2)4+3(2)3−10(2)2)/((2)2−2(2))=(16+24−40)/(4−4)=0/0We get an indeterminate form 0/0, which means we cannot find the limit by direct substitution.
Factor Numerator & Denominator: Factor the numerator and denominator to simplify the expression.Factor x2 out of the numerator and x out of the denominator:x(x−2)x2(x2+3x−10)Now, factor the quadratic x2+3x−10:x(x−2)x2(x+5)(x−2)
Cancel Common Factors: Cancel out the common factors in the numerator and the denominator.Cancel the common factor (x−2):xx2(x+5)
Simplify Expression: Simplify the expression further by canceling out any more common factors.Cancel the common factor x:(x(x+5))
Try Direct Substitution Again: Now that the expression is simplified, try direct substitution again.Substitute x=2 into the simplified function:(2(2+5))= (2×7)= 14