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Learning Journal Unit 4

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Reflect on the concept of composite and inverse functions. What concepts (only the names) did you need to accommodate these concepts in your mind? What are the simplest composite and inverse functions you can imagine? In your day to day, is there any occurring fact that can be interpreted as compos...

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  • April 10, 2023
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Reflect on the concept of composite and inverse functions. What concepts (only the

names) did you need to accommodate these concepts in your mind? What are the

simplest composite and inverse functions you can imagine? In your day to day, is there

any occurring fact that can be interpreted as composite and inverse functions? What

strategy are you using to get the graph of composite and inverse functions?




“A composite function is formed when the output of the first function becomes the input of

the second function. Let f and g be functions and let x be the input of g. Then, g(x) is the

output of function g. g(x) is the input of function f and the output of function f is f(g(x))

f(g(x) is the composite function of f and g and it is defined as (f ∘ g)(x) = f(g(x)). We can also

let x be the input of f. Then, f(x) is the output of function f. f(x) is the input of function g and

the output of function g is g(f(x)) g(f(x) is a composite function of g and f and it is defined as

(g ∘ f)(x) = g(f(x))” (Basic-mathematics, 2019).

A function acknowledges values, performs specific operations on these values, and produces

an output. The inverse function acknowledges the resultant, perform an operation, and

reaches back to the initial function. If you consider functions, f and g are reverse, f(g(x)) =

g(f(x)) = x. A function that consists of its inverse brings the initial value. The connection,

created when the free variable is interchanged with the variable which is subordinate on a

specified equation and this inverse may or may not be a function. If the inverse of a function

is itself, at that point it is known as inverse function, signified by f-1(x) (BYJU’s, 2020).

The concepts that needed to be accommodated with regards to composite and inverse

functions are associative, one-on-one, invertible, domain, inverse, injective, surjective,

interchange, codomain, parabola, mapping, range, inputs, outputs, graph, axis, ordered pairs,

substitute, functions, algebraically and notations. The simplest composite and inverse

function are f(x), f (g(x)) and y=x.

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