How do I solve this problem below? I am currently researching limits in Calculus.    Evaluate the Limit if it exists?  lim x→25  5 −    x 25x − x2   and    lim h→0  (3 + h)3 − 27 h

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter3: Functions And Graphs
Section3.6: Quadratic Functions
Problem 57E
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How do I solve this problem below? I am currently researching limits in Calculus. 

 

Evaluate the Limit if it exists? 

lim x→25 

5 − 
  x
25x − x2

 

and 

 

lim h→0 

(3 + h)3 − 27
h
Expert Solution
Step 1

1). Given

 

lim -Vr
25 25x-x
Step 2

Finding the derivative of numerator and denominator seperately (L' hospital rule) and simplifying, we get

 

1
5-Vx
lim 2x
25-2x
lim
25
25x-x2
-2
1
2/25
25-2(25)
1
10
-25
1
250
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