(3) Show that the function is discontinuous on the specified interval. Vx2 - 64 if x < -8 if -8

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter5: Inverse, Exponential, And Logarithmic Functions
Section5.6: Exponential And Logarithmic Equations
Problem 64E
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(3) Show that the function is discontinuous on the specified interval.
Vx2 – 64 if x < -8
if – 8 < x < 8; [-8,8]
0if x 8
f(x) = {x + 8
Analysis: Real-life Applications
(1) Aling Priscilla has a promotion in selling her lanzones by kilogram to encourage more
customers. The promotion is as follows: The lanzones is sold for Php120.00 per kg if not
more than 3 kg, Php100.00 per kg for order that is more than 3 kg but less than 6 kg and
Php90.00 per kg if the order is at least 6 kg.
a) Find a mathematical model expressing the total cost C of buying lanzones as a
function of its mass in kilograms x.
b) Determine the number for which the function is discontinuous and show
which of the conditions in the definition of continuity is not satisfied.
c) What is the significance of the numbers for which the function is discontinuous
in the given situation?
Transcribed Image Text:(3) Show that the function is discontinuous on the specified interval. Vx2 – 64 if x < -8 if – 8 < x < 8; [-8,8] 0if x 8 f(x) = {x + 8 Analysis: Real-life Applications (1) Aling Priscilla has a promotion in selling her lanzones by kilogram to encourage more customers. The promotion is as follows: The lanzones is sold for Php120.00 per kg if not more than 3 kg, Php100.00 per kg for order that is more than 3 kg but less than 6 kg and Php90.00 per kg if the order is at least 6 kg. a) Find a mathematical model expressing the total cost C of buying lanzones as a function of its mass in kilograms x. b) Determine the number for which the function is discontinuous and show which of the conditions in the definition of continuity is not satisfied. c) What is the significance of the numbers for which the function is discontinuous in the given situation?
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