[3) is defined by f (x) = 15, Зх +4 and 5х-7 Show that if f:R- →R- 7x+4 8:R- is defined by g(x) = , then fog = I, and gof = Ip, where, 5х-3 S31 B = R- A= R- ;I,(x) = x, € A, I, (x) = x, xE B are called identity functions on sets A and B, respectively.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
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Зх+4
and
5х-7
Show that if f:R-
5
is defined by f (x)=-
7x+4
8:R
is defined by g (x)%3D
, then fog = I, and gof = I, where,
-
B'
5x-3
A= R-
B = R-
;I, (x) = x, xe A, I, (x) = x, Vxe B are called identity
functions on sets A and B, respectively.
Transcribed Image Text:Зх+4 and 5х-7 Show that if f:R- 5 is defined by f (x)=- 7x+4 8:R is defined by g (x)%3D , then fog = I, and gof = I, where, - B' 5x-3 A= R- B = R- ;I, (x) = x, xe A, I, (x) = x, Vxe B are called identity functions on sets A and B, respectively.
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