Explain the concepts as well Let : RR be an increasing function. Suppose that there exist a, b ER satisfy ba and a ≤ f(a) and f(b) < b. Show that f has at least one fixed point., that is, there is some ER such that f(x)=x. (Hint: Consider suply ER: asusby≤ f(y)) and 2) can explain how to solve this?

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Explain the concepts as well
Let f: R→ R be an increasing function. Suppose that there exist a, b R satisfy
b>a and a ≤ f(a) and f(b) < b. Show that f has at least one fixed point., that is, there
is some z ER such that f(x) = x.
(Hint: Consider z:= sup{y ER: a ≤ y ≤ by ≤ f(y)} and 2)
can explain how to solve this?
why is fctn_a increase fcta?
why is the y values part of x values?
(f(b)<b
why is:
f(z)>z
why f(f(z)) what is it?
'et
and suppose
a foa)
NOW
N
and
From
and
then
AS
Since f
a ≤ f(a)
is increasing function
f(b)at.
we have
z = sup B
an increasing function.
fra) = f(b) →
_f(b) <b→ @
and
< f(a) = f(b) <b
B=yer: asy≤b, y ≤ fry] }
== sup &
if
f(=> >Z
f(f(x)) = f(z> >=
Fc=> EB.
Satisfy b> a and
falz -
from & D : f(z)=z
If zB: then t(=) == LO
consider ang xe đ
since
2 & 13 ond
⇒x<z
z = sup 12.
f(x) < fre)
Transcribed Image Text:Explain the concepts as well Let f: R→ R be an increasing function. Suppose that there exist a, b R satisfy b>a and a ≤ f(a) and f(b) < b. Show that f has at least one fixed point., that is, there is some z ER such that f(x) = x. (Hint: Consider z:= sup{y ER: a ≤ y ≤ by ≤ f(y)} and 2) can explain how to solve this? why is fctn_a increase fcta? why is the y values part of x values? (f(b)<b why is: f(z)>z why f(f(z)) what is it? 'et and suppose a foa) NOW N and From and then AS Since f a ≤ f(a) is increasing function f(b)at. we have z = sup B an increasing function. fra) = f(b) → _f(b) <b→ @ and < f(a) = f(b) <b B=yer: asy≤b, y ≤ fry] } == sup & if f(=> >Z f(f(x)) = f(z> >= Fc=> EB. Satisfy b> a and falz - from & D : f(z)=z If zB: then t(=) == LO consider ang xe đ since 2 & 13 ond ⇒x<z z = sup 12. f(x) < fre)
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