Suppose also that you were not told the details of those separate charges, but only that the function C(n) = 1.25(55n + 300) gives total cost of the event.

Slides:



Advertisements
Similar presentations
2.3 Combinations of Functions Introductory MATHEMATICAL ANALYSIS For Business, Economics, and the Life and Social Sciences (12 th Edition) Copyright ©
Advertisements

Domain: 1) f(0) = 8 2) f(3) = 3) g(-2) = -2 4) g(2) = 0 5) f(g(0)) = f(2) =0 6) f(g(-2)) = f(-2) =undefined 7) f(g(2)) = f(0) =8 8) f(g(-1)) = f(1) =3.
Operations with Functions
Operations with Functions
6-5 operations with functions
Warm-up Arithmetic Combinations (f+g)(x) = f(x) + g(x) (f-g)(x) = f(x) – g(x) (fg)(x) = f(x) ∙ g(x) (f/g)(x) = f(x) ; g(x) ≠0 g(x) The domain for these.
1.7 Combination of Functions
7-3 NOTES Algebra II. Starter Given that f(x) = 3x – 2, and g(x) = 2x 2, f(x) – g(x) = f(x) *g(x) g(f(x)) =
Composition of Functions. Definition of Composition of Functions The composition of the functions f and g are given by (f o g)(x) = f(g(x))
DO NOW: 6.3: w/s C: Perform the indicated operation. 1.) Find g(f(x)) if f(x) = 2x 2 – x and g(x) = 2.) Find g(h(8)) if g(x) = -x 2 and h(x) =
Product and Quotients of Functions Sum Difference Product Quotient are functions that exist and are defined over a domain. Why are there restrictions on.
Chapter 7 7.6: Function Operations. Function Operations.
Translations and Combinations Algebra 5/Trigonometry.
5.1 Composite Functions Goals 1.Form f(g(x)) = (f  g) (x) 2.Show that 2 Composites are Equal.
Simplify. Assume that all expressions are defined.
Operations on Functions Lesson 3.5. Sums and Differences of Functions If f(x) = 3x + 7 and g(x) = x 2 – 5 then, h(x) = f(x) + g(x) = 3x (x 2 – 5)
Composite Functions. O Finding a composite function simply means plugging one function into another function. O The key thing to remember is which way.
6-1: Operations on Functions (Composition of Functions)
Composite Functions How would you define composite functions? Math30-1.
1 Solve each: 1. 5x – 7 > 8x |x – 5| < 2 3. x 2 – 9 > 0 :
Do Now: Find f(g(x)) and g(f(x)). f(x) = x + 4, g(x) = x f(x) = x + 4, g(x) = x
Warm-Up . Homework Questions Domain Algebraically Pre-Calculus Mrs. Ramsey.
Algebra II Function Operation Examples
Finding Inverses (thru algebra) & Proving Inverses (thru composition) MM2A5b. Determine inverses of linear, quadratic, and power functions and functions.
7.7 Operations with Functions 7.8 Inverse of Functions Algebra II w/ trig.
Review finding inverses and composite functions using square roots To find an inverse mathamaticaly there is one simple rule: Switch the x and y XY.
Operations with Functions
Do Now: Perform the indicated operation.
Operations with Functions
Composition of functions
Ch. 1 – Functions and Their Graphs
3.5 Operations on Functions
Do Now:.
DO NOW: Perform the indicated operation.
Finding the Inverse of a Function Algebraically
Composition of Functions
Fun with Functions!.
Composition of Functions 1.
Functions Review.
Section 5.1 Composite Functions.
Homework Questions.
= + 1 x x2 - 4 x x x2 x g(x) = f(x) = x2 - 4 g(f(x))
Combinations of Functions:
Activity 2.8 Study Time.
Homework Questions.
Composition of Functions And Inverse Functions.
2-6: Combinations of Functions
2.6 Operations on Functions
Combinations of Functions
Operations with Functions
Domain, range and composite functions
3.5 Operations on Functions
Function Operations Function Composition
Warm Up Determine the domain of the function.
Perform the indicated operation.
Find the derivative of the following function:   {image} .
Determine if 2 Functions are Inverses by Compositions
Warm Up Determine the domain of f(g(x)). f(x) = g(x) =
Section 2 – Composition of Functions
Use Inverse Functions Notes 7.5 (Day 2).
6.3 Perform Function Operations & Composition
Function Operations Function Composition
Replace inside with “x” of other function
2-6: Combinations of Functions
Venn diagrams, sets, vectors and functions.
Operations on Functions
Evaluate x = 3; 2x + 6.
12 Chapter Chapter 2 Exponential and Logarithmic Functions.
Composition of Functions
Objectives Add, subtract, multiply, and divide functions.
Presentation transcript:

Suppose also that you were not told the details of those separate charges, but only that the function C(n) = 1.25(55n + 300) gives total cost of the event as a function of the number of people attending. a. Looking at the rule for C(n) what would you suspect to be: i. the cost for party room rental? ii. the cost per person for food and drinks? iii. the percent rate of the service charge? b. What function P(n) probably gives party costs for room rental, food, and drinks for n guests(before the service charge is applied)? c. What function C(P) probably shows how to calculate total party cost, including service charge, as a function of P, the bill for room rental, food, and drinks? d. What is the rule for C(n) = C(P(n))?

For each of the following functions f(x), give rules for two functions g(x) and h(x) so that f(x) = g(h(x)). Do not use the simple choices such as h(x) = x and g(x) = f(x). There are several other possible combinations of functions in each case. e. f(x) = 5x – 8f. f(x) = (2x + 5) 2

Find simplest possible algebraic rules for each of the composite functions in Parts a–d. State any restrictions on the domains of the composite functions. a.If f(x) = x + 4 and g(x) = x – 4, what are the rules for f(g(x)) and g(f(x))? b. If f(x) = 5x + 2 and g(x) = 0.2x – 1, what are the rules for f(g(x)) and g(f(x))?

Find simplest possible algebraic rules for each of the composite functions in Parts a–d. State any restrictions on the domains of the composite functions.